Electronics

Garmin brings power to the pedal with the Vector. Built in conjunction with Look Keo pedals, the Vector offers precise power measurement in a rugged, ultra-convenient, discreet package. Garmin encased sensitive strain gauges inside the stainless steel pedal spindles for years of durability and accuracy to within +/- 2%. The Vector is essentially two separate power meters and measures power from both legs, meaning you have the data to correct discrepancies between your left and right sides. Now you can eke out those last few watts and maximize your pedaling economy. Switching the pedals and pods between bikes is blissfully hassle-free and takes less time than getting kitted up. The pedal bodies are built of tough, light carbon, while the battery/ANT+ pods hang protected beneath the crank arms. At a nimble 312 grams including pedal weight, the Vector is one of the lightest power meters available.

Garmin brings power to the pedal with the Vector 2. Built in conjunction with Look Keo pedals, the Vector offers precise power measurement in a rugged, ultra-convenient, discreet package. Garmin encased sensitive strain gauges inside the stainless steel pedal spindles for years of durability and accuracy to within +/- 2%. The Vector is essentially two separate power meters and measures power from both legs, meaning you have the data to correct discrepancies between your left and right sides. Now you can eke out those last few watts and maximize your pedaling economy. The robust Vector 2S pods are easy to mount, and have a status light indicating when they're on and pairing occurs. Switching the pedals and pods between bikes is blissfully hassle-free and takes less time than getting kitted up. The pedal bodies are built of tough, light carbon, while the battery/ANT+ pods hang protected beneath the crank arms. At a nimble 312 grams including pedal weight, the Vector is one of the lightest power meters available.

Whether it's just having a second battery for peace of mind, or for carrying on a ride you know is going to require a bit more juice, Specialized's Turbo SC battery has a long lifecycle for that extra distance. It charges super fast and has a massive 691Wh capacity. - Custom Li-Ion battery for Turbo. - 691Wh capacity (60 cells x 3.2Ah) with ANT/BT module to connect to external devices. - Allows super-fast charging times and a long life cycle.

Developed with Quarq and bearing the S-Works badge of innovation and quality, Specialized's SpeedZone ANT+ Power Spider is set to take your metrics and performance to the next level. This strain gauge power meter is accurate to 0.5% and possesses a self-calibration mode at startup so your results stay accurate. The SpeedZone Power Spider is compatible with all ANT+ devices, so you can use the GPS unit or computer of your choice.

The Custom Li-Ion Turbo Levo Battery has 504Wh capacity and works with all Turbo Levo models. The battery also includes an ANT+/ Bluetooth module that enables the bike to work with Specialized Mission Control App or any other ANT+ device. - Battery features 504Wh. - Works for all Turbo Levo models. - ANT+/Bluetooth module works with our Mission Control App and any other ANT+ device. - LEVO BATTERY, 3.5AH X 40, 504 WH, ANT+/BT MODULE, SERVICE PARTS REQUIRE FOR FULL BATTERY ASSEMBLY: S166800005, S169900019, S170500004

This is a custom Li-Ion Turbo Vado Battery that has a 604Wh capacity that works with all Turbo Vado models. It's fully integrated with the frame, removable for easy charging, and lockable for added security. - Battery features a 604Wh capacity. - Works with all Turbo Vado models. - Lockable and down tube integrated. - Chargeable either on- or off-the-bike. - Includes LED power indicator.

With Garmin's Vector 2S you'll find yourself breaking through mental barriers and eking out those last few watts. The Vector 2S offers precise power measurement of your left leg and uses that information to approximate your total and average power. All of this comes in a rugged, ultra-convenient, discreet package that's integrated with a Look Keo Pedal. Garmin encased the sensitive strain gauge inside the stainless steel pedal spindle for years of durability and accuracy to within +/- 2%. The pedal bodies are built of tough, light carbon, while the battery/ANT+ pod hangs protected beneath the left crank arm. The robust Vector 2S pod is easy to mount, and has a status light indicating when it's on and pairing occurs. Switching the pedals and pod between bikes is blissfully hassle-free and takes less time than getting kitted up. Garmin also offers you the ability to upgrade to the dual-sensing Vector system which provides additional data about the power produced by each leg.

With Garmin's Vector S you'll find yourself breaking through mental barriers and eking out those last few watts. The Vector S offers precise power measurement of your left leg and uses that information to approximate your total and average power. All of this comes in a rugged, ultra-convenient, discreet package that's integrated with a Look Keo Pedal. Garmin encased the sensitive strain gauge inside the stainless steel pedal spindle for years of durability and accuracy to within +/- 2%. The pedal bodies are built of tough, light carbon, while the battery/ANT+ pod hangs protected beneath the left crank arm. Switching the pedals and pod between bikes is blissfully hassle-free and takes less time than getting kitted up. Garmin also offers you the ability to upgrade to the dual-sensing Vector system which provides additional data about the power produced by each leg.

First, Garmin invented wrist-worn portable navigation. Then, with the D2 Bravo pilot watch, we took the idea a step further — combining even more capability and features in an elegant design that is lighter, thinner, more connected and simpler to use in today’s busy cockpit environments. - Thinner, lighter, more evolved GPS pilot watch design - Features METAR screen for the latest aviation weather information - Dedicated Direct-to and Nearest buttons enabled by a worldwide airport database - Scratch-resistant optical sapphire lens and crisp color display that's customizable with Connect IQ apps - Baro-adjustable altimeter, HSI, Zulu/UTC time reference, various timers and alerts plus wireless control for VIRB® cameras

Go from one-sided to dual-sided power measurement with Garmin's Vector 2S Upgrade Pedal. With your standard 2S system (sold separately) you only have power data from your left leg, which leaves the possibility of unknown discrepancies between your left and right sides. Injuries, natural imbalances, and other factors that leave one side of your body less powerful than the other are common. By measuring power from both legs, you get a much more accurate picture of what you're doing and how to improve on any asymmetry you might have.

You've seen major improvements by tracking your power on Garmin's Vector S and now it's time to have crucial data about how many watts each leg produces. The Vector S Upgrade Kit includes a right Vector pedal to go with your Vector S, so you'll be able to measure the output from your left and right legs individually. As you detect and correct imbalances in pedal smoothness and torque effectiveness, you'll achieve new levels in your riding.

Garmin's fenix 3 Sapphire is the beautifully stylish, yet rugged, capable and smart multisport training GPS watch. With feature sets for fitness training plus feature sets for outdoor navigation, fenix 3 is ready for any training activity and competition. Access to the Connect IQ platform allows customization of watch faces and data fields and provides downloadable widgets and apps. The fenix 3 features a protective stainless steel bezel and buttons and reinforced housing for extra durability. A sunlight-visible high-resolution color Chroma display with LED backlight lets you access your data in any light. fenix 3 is water-rated to 100 meters and has a battery life of up to 50 hours in UltraTrac mode, 20 hours in GPS mode and up to 3 weeks in smart-watch mode (all depending on settings). - Stainless steel EXO™ antenna with GPS/GLONASS support for fast fix and accuracy - 1.2-inch sunlight-readable color Chroma™ display with high-strength domed sapphire lens - Fitness training features like VO2 max and recovery advisor (when used with a heart rate monitor. sold separately) - Outdoor navigation features like 3-axis compass, altimeter and barometer and TracBack® feature - Connect IQ™ compatibility for customized apps, widgets, watch faces and data fields

Pioneer's Shimano Dura Ace 9000 Power Meter is a revolutionary power meter that attaches stealthily to the left crankarm. The Dura Ace 9000 left crank arm meter allows every rider power-based (also called watt-based) training performance, allowing you to fine-tune your pedaling to find race-winning form without breaking the bank. With advanced technology accurate to +/- 2%, ANT+ transmitting, active temperature compensation, and a mere 22 grams of weight, the Pioneer power meter is perfect for any cyclist. Additionally, installation is fast, simple, and clean with zero wires, magnets, or zip ties. If you find yourself addicted to the data and crave more, upgrade kits that retroactively add drive-side power are available (sold separately).

Real time data, full time training: Garmin's Edge 1000 helps you connect, compare, and compete. Wireless connectivity via Bluetooth and ANT+ gives you access to on-ride competitions through Garmin Connect, Smart Notifications from your phone, and real-time segment and leaderboard updates. This module is also pre-loaded with Garmin's Cycle Map, complete with routable road and bike path data, elevation, points of interest, and address search. Mapping data is stored onboard the Edge 1000, so feel free to explore outside of cell coverage. The Edge 1000 features the same quality and specs you've come to expect from Garmin: a three-inch, high-resolution touchscreen, complete cycle computer functionality, GPS mapping and tracking, Virtual partner, and Advanced Workouts for customized, goal-oriented training. The rechargeable lithium-ion battery has up to 15 hours of life so you can go for extended rides multiple days in a row without recharging it. The Edge 1000 Bundle contains the Edge 1000 cycle computer, speed and cadence sensors, a Premium heart rate monitor, two different handlebar mounts, and all the necessary charging cables.

Garmin's Epix w/TOPO Canada is a high-resolution, color touchscreen GPS/GLONASS mapping watch with a worldwide, shaded relief basemap and 1-year BirdsEye Satellite Imagery subscription. Eight GB of built-in memory supports additional mapping, a TOPO Canada 100K map, BirdsEye Satellite Imagery and regional TOPO US 24K maps. The revolutionary, stainless steel EXO antenna combined with GPS and GLONASSS reception mean better signal strength and quicker position fixes. Use it during back country excursions, pair it with your Garmin Vector power meter, estimate your VO2 max while running, and record your average stroke rate for improved swimming efficiency. The Epix does it all. • 1.4-inch high-resolution color touchscreen • Worldwide shaded relief basemap • 8 GB built-in memory so you can load up on maps, such as TOPO U.S. 24K and BirdsEye Satellite Imagery •TOPO 100K Canada map includes national, state and local parks and forests, along with terrain contours, elevation information, trails, rivers, lakes and points of interest • Stainless steel EXO antenna with GPS/GLONASS reception • Altimeter, barometer and 3-axis compass

Garmin's Epix w/TOPO US is a high-resolution, color touchscreen GPS/GLONASS mapping watch with a worldwide, shaded relief basemap and 1-year BirdsEye Satellite Imagery subscription. Eight GB of built-in memory supports additional mapping, a TOPO US 100K map, BirdsEye Satellite Imagery and regional TOPO US 24K maps. The revolutionary, stainless steel EXO antenna combined with GPS and GLONASSS reception mean better signal strength and quicker position fixes. Use it during back country excursions, pair it with your Garmin Vector power meter, estimate your VO2 max while running, and record your average stroke rate for improved swimming efficiency. The Epix does it all. • 1.4-inch high-resolution color touchscreen • Worldwide shaded relief basemap • 8 GB built-in memory so you can load up on maps, such as TOPO U.S. 24K and BirdsEye Satellite Imagery •TOPO 100K US map includes national, state and local parks and forests, along with terrain contours, elevation information, trails, rivers, lakes and points of interest • Stainless steel EXO antenna with GPS/GLONASS reception • Altimeter, barometer and 3-axis compass

From the company that launched the world’s first GPS multisport devices comes a watch that’s qualified to guide the training of elite and amateur athletes alike. Introducing Forerunner 920XT — with advanced features including running dynamics, VO2 max estimate, live tracking and smart notifications. - Running dynamics include cadence, vertical oscillation and ground contact time - Offers VO2 max estimate, race predictor and recovery advisor - Features swim distance, pace, stroke type identification, stroke count, drill logging and rest timers - Smart notifications (when paired with a compatible smartphone) let you see email, text and other alerts on your watch - Connected features: automatic uploads to Garmin Connect™, live tracking, social media sharing

Garmin's Epix is a high-resolution, color touchscreen GPS/GLONASS mapping watch with a worldwide, shaded relief basemap and 1-year BirdsEye Satellite Imagery subscription. Eight GB of built-in memory supports additional mapping, including BirdsEye Satellite Imagery and regional TOPO U.S. 24K maps. The revolutionary, stainless steel EXO antenna combined with GPS and GLONASSS reception mean better signal strength and quicker position fixes. Use it during back country excursions, pair it with your Garmin Vector power meter, estimate your VO2 max while running, and record your average stroke rate for improved swimming efficiency. The Epix does it all. • 1.4-inch high-resolution color touchscreen • Worldwide shaded relief basemap • 8 GB built-in memory so you can load up on maps, such as TOPO U.S. 24K and BirdsEye Satellite Imagery • Stainless steel EXO antenna with GPS/GLONASS reception • Altimeter, barometer and 3-axis compass

Garmin's Fenix 3 Performer Bundle does everything except prepare your morning brew, which you'll need a lot of if you plan on using this watch to its fullest extent. The Fenix 3 is a rugged multi-sport GPS tool with features for serious training and outdoor navigation, yet it's stylish for everyday use so no one will know of your double life. Whether you're on the bike, trail running, or open water swimming, the Fenix has enough metrics to satisfy any outdoor junky's data cravings. Plus, with advanced fitness metrics you'll stay on top of your game during work, recovery, and even sleep. • Stainless Steel EXO antenna with GPS + GLONASS support for fast fix and accuracy • 1.2-inch sunlight readable color Chroma display • Fitness training features include VO2 Max and Recovery Adviser • Outdoor navigation features include 3-axis compass, altimeter and barometer, TracBack and Sight’n Go • Connect IQ compatibility for customized apps, widgets, watch faces and data fields • Water rated to 100 meters

Whether you're looking to take your training to the next level or you simply want a better way to measure energy expenditure, a power meter is your best bet. And the Power Cranks Ultegra Upgrade Kit are no exception. With our lightweight power sensors on a Shimano Ultegra crankarm, it's the perfect way to enter the power meter game. The development of Power Cranks began with our Human Performance Team looking at riders in realistic scenarios on the bike. Historically, power meters have been validated by two different methods—one is by measuring the produced torque by applying a static, linear load to a crankarm or chainring, while the second uses a power generating motor to pedal the bike. Well, cycling is neither static nor linear, and humans apply power much differently than a machine. So, we found that neither of these methods answers the 'real-world' accuracy question. To get the best test for accuracy, in all types of riding scenarios, we built our own cycling treadmill, the WinMill, to measure power output to a known truth. This new benchmark lets us evaluate accuracy under all riding conditions—seated versus standing, various power and cadence levels, different weights, and a myriad of gear. This data acquisition process is our gold-standard for testing power meters, and through our testing and external validation from the Locomotion Lab in Boulder, Colorado, Power Cranks have been proven to have the highest accuracy in real-world scenarios (+/- 1.5%). The Power Cranks are also easy to live with, with class-leading temperature compensation firmware and waterproof enclosures. Calibration is only required during seasonal-type fluctuations in temperature, and the included wrench makes battery swaps a breeze. - +/- 1.5% real-world accuracy tested on the WinMill and validated by the Locomotion Lab in Boulder, CO. - Works with ANT+ and Bluetooth® devices. - Easy set-up and diagnostics with the Specialized Power app. (iOS and Android versions available). - Shimano 8000 generation Ultegra left-side power measurement. - Right crankarm and spider NOT included. - Available in 170-175mm crankarm lengths.

Real time data, full time training: Garmin's Edge 1000 helps you connect, compare, and compete. Wireless connectivity via Bluetooth and ANT+ gives you access to on-ride competitions through Garmin Connect, Smart Notifications from your phone, and real-time segment and leaderboard updates. This module is also pre-loaded with Garmin's Cycle Map, complete with road and bike path data, elevation, points of interest, and address search. Mapping data is stored onboard the Edge 1000, so feel free to explore outside of cell coverage. The Edge 1000 features the same quality and specs you've come to expect from Garmin: a three-inch, high-resolution touchscreen, complete cycle computer functionality, GPS mapping and tracking, Virtual partner, and Advanced Workouts for customized, goal-oriented training. The rechargeable lithium-ion battery has up to 15 hours of life, and the Edge 1000 comes with traditional and out-front handlebar mounts.

Garmin’s Edge 810 can do pretty much everything, short of pedal your bike for you. Sure this water-resistant wonder has great metrics like speed, distance, ride time, heart rate, ANT+ compatibility with power meters, and the best mapping and routing on a bike computer. But what really sets this unit apart can be summed up in two words: real time. It syncs with your smartphone via Bluetooth to enable live tracking, so you can share your ride data with friends, loved ones, or teammates as you ride. Let all your friends on social media know just how hard you're crushing it. This wireless connection also works the other way: create a course online or view your past workouts and — with the Garmin Connect app — you can easily send them to your 810 for use during a ride, or against a virtual partner to race against your previous efforts. You can also download new courses onto your 810, and receive turn-by-turn navigation as you ride. It even has real-time weather updates. Plus,with its highly-detailed street and optional topographical maps, the Edge 810 is perfect for touring, commuting, or any other activity where onboard maps and navigation are required.

Garmin's Fenix 3 does everything except prepare your morning brew, which you'll need a lot of if you plan on using this watch to its fullest extent. The Fenix 3 is a rugged multi-sport GPS tool with features for serious training and outdoor navigation, yet it's stylish for everyday use so no one will know of your double life. Whether you're on the bike, trail running, or open water swimming, the Fenix has enough metrics to satisfy any outdoor junky's data cravings. Plus, with advanced fitness metrics you'll stay on top of your game during work, recovery, and even sleep. • Stainless Steel EXO antenna with GPS + GLONASS support for fast fix and accuracy • 1.2-inch sunlight readable color Chroma display • Fitness training features include VO2 Max and Recovery Adviser (when used with a heart rate monitor) • Outdoor navigation features include 3-axis compass, altimeter and barometer, TracBack and Sight’n Go • Connect IQ compatibility for customized apps, widgets, watch faces and data fields • Water rated to 100 meters

Simply put, Garmin’s 920XT is like having a personal coach next to you for every workout you log. All the training tools this coach possesses fit into a sleek, lightweight sport watch that can be worn all day. Just push a button on the 920 to change the mode from swimming or cycling to running. Pull on your cap and goggles, and most importantly, grab your Garmin. It tells you when to push off the wall, and should you lose track of how many laps you've completed, it lets you know that your set is over. There are even alerts for calories, pace, and stroke rate. With the 920 on your wrist, you’ll quickly boost your swimming strength and efficiency. On the bike, this Garmin is compatible with sensors such as speed, cadence, and heart rate to provide advanced training information for your cycling workouts. Pair it with a power meter and you’ll have power metrics to dial in your efforts, an estimate of your VO2 max so you can see improvements in your fitness, and a comparison of yourself against other athletes in your age group for a little extra motivation. And while running, with its Virtual Partner, Virtual Racer, Auto Lap, auto pause, time/distance alerts, and interval training mode, you’re bound to have a focused run workout. Wear it with the included Garmin HRM-Run monitor and you’ll also be able to zero in on your running technique, view your estimated VO2 max, and look at race time predictions. You know that transitions in racing are important, but it is also crucial that you move seamlessly between training and your daily life. That’s why Garmin includes smart notifications that let you see your emails, texts, and other alerts when the 920 is paired with a smartphone. It automatically uploads to Garmin Connect so you can quickly see your stats and invite others to track your accomplishments live. Plus, it gives you a complete picture of your day by measuring your steps, sleep, and calories burned. Train smart so you can race hard!

Capture your adventures with the cinematic quality of GoPro's Hero4 Black Edition. It's the first camera of its kind capable of ultra-high resolution 4K30 recording. Experience impossibly lifelike video, gorgeous slow-motion, and razor-sharp resolution—all from a camera that fits in the palm of your hand. Hero4’s Protune mode lets you flex your creativity with advanced manual controls that allow you to customize settings for color, ISO limit, white balance, sharpness, and exposure. Night Photo, Night Lapse, and Auto Low Light modes deliver unprecedented clarity in low-light. The built-in Wi-Fi and Bluetooth capabilities let you control the camera using the included remote and even preview your video using the free GoPro app. The HiLight Tag button enables you to mark key moments while recording so you can quickly locate your best clips for convenient playback, editing, or sharing. GoPro knows that video is only one half the equation, so they equipped the Hero4 with a stellar audio system to ensure your recordings sound smoother and more natural than ever. For still photography, the Hero4 packs a 12-megapixel camera that bursts at 30 frames per second, so your creativity can run as wild as your adventures. GoPro Hero4 Black—powerful, professional, and simply stunning.

When adventure calls, answer it on 2 wheels with Edge Explore 1000. Ideal for touring and adventure, this navigator has a preloaded Garmin Cycle Map with routable road and bike paths, elevation data, points of interest and address search. - On-road or off-road navigation with preloaded Garmin Cycle Map - Input distance and other parameters and choose from up to 3 round-trip ride options - Plan new routes to follow, on device or through apps - Incident detection* offers automatic or manual alerts to emergency contacts - Connected features*: instant uploads, incoming call and text alerts, live tracking, weather * when paired with a compatible smartphone

Whether you’re training for your first marathon or looking to crush a personal record, Forerunner 630 provides all the extensive data you need for training and racing. Check your form by pairing your 630 with the HRM-Run monitor (included) to measure cadence, vertical oscillation and ground contact time. Additional running dynamics include ground contact time balance, stride length and vertical ratio. The bundle includes Garmin's HRM-Run heart rate strap for even more running metrics to geek out on. - Touchscreen GPS running watch with a high resolution color display - Advanced running dynamics include ground contact time balance, stride length and vertical ratio (when paired with included HRM-Run monitor) - Features stress score, performance condition and lactate threshold (when paired with included heart rate monitor) - Connected features: automatic uploads to Garmin Connect, live tracking, audio prompts, music controls, smart notifications and social media sharing (when paired with compatible smartphone) - Download data fields, watch faces, widgets and applications from Connect IQ

Simply put, Garmin’s 920XT is like having a personal coach next to you for every workout. All the training tools this coach possesses fit into a sleek, lightweight sport watch that can be worn all day. Just push a button on the 920 to change the mode from swimming or cycling to running. Pull on your cap and goggles, and most importantly, grab your Garmin. It tells you when to push off the wall, and should you lose track of how many laps you've completed, it lets you know that your set is over. There are even alerts for calories, pace, and stroke rate. With the 920 on your wrist, you’ll quickly boost your swimming strength and efficiency. On the bike, this Garmin is compatible with sensors such as speed, cadence, and heart rate to provide advanced training information for your cycling workouts. Pair it with a power meter and you’ll have power metrics to dial in your efforts, an estimate of your VO2 max so you can see improvements in your fitness, and a comparison of yourself against other athletes in your age group for a little extra motivation. And while running, with its Virtual Partner, Virtual Racer, auto lap, auto pause, time/distance alerts, and interval training mode, you’re bound to have a focused run workout. When combined with Garmin’s HRM-Run monitor you’ll also be able to zero in on your running technique, view your estimated VO2 max, and look at race time predictions. You know that transitions in racing are important, but it is also crucial that you move seamlessly between training and your daily life. That’s why Garmin includes smart notifications that let you see your emails, texts, and other alerts when the 920 is paired with a smartphone. It automatically uploads to Garmin Connect so you can quickly see your stats and invite others to track your accomplishments live. Plus, it gives you a complete picture of your day by measuring your steps, sleep, and calories burned. Train smart so you can race hard!

Garmin's VIRB XE action camera shoots rich, high-definition, wide-angle footage at 1080p60, and 12 megapixel photos at up to 30 frames per second. Powered by Garmin GPS, G-Metrix allows you to track and overlay how fast, how far, how high, and how intense the moment truly was. Designed for the toughest environments, the VIRB XE is able to dive to 50 meter depths without a case, allowing capture of cleaner and clearer audio. Its tough, compact design is ready to withstand the elements with an exposed microphone that records clean and clear audio that cameras in cases just can’t pick up. Thanks to a hydrophobic, flat, glass lens, underwater shots are crystal clear while transitions in and out of the water stay unobstructed by droplets. The VIRB XE features weatherproof power contacts so you can connect to a vehicle battery or other power source to allow for long periods of uninterrupted recording in even the toughest conditions. VIRB XE also features a rechargeable/replaceable lithium-ion battery for maximum flexibility. The VIRB XE Cycling Bundle has everything you need to tell a better story, including a combo mount, vented helmet mount, tube mounts, and 16 GB microSD card.

Whether you're looking to take your training to the next level or you simply want a better way to measure energy expenditure, a power meter is your best bet. And the Power Cranks 105 Upgrade Kit are no exception. With our lightweight power sensors on a Shimano 105 crankarm, it's the perfect way to enter the power meter game. The development of Power Cranks began with our Human Performance Team looking at riders in realistic scenarios on the bike. Historically, power meters have been validated by two different methods—one is by measuring the produced torque by applying a static, linear load to a crankarm or chainring, while the second uses a power generating motor to pedal the bike. Well, cycling is neither static nor linear, and humans apply power much differently than a machine. So, we found that neither of these methods answers the 'real-world' accuracy question. To get the best test for accuracy, in all types of riding scenarios, we built our own cycling treadmill, the WinMill, to measure power output to a known truth. This new benchmark lets us evaluate accuracy under all riding conditions—seated versus standing, various power and cadence levels, different weights, and a myriad of gear. This data acquisition process is our gold-standard for testing power meters, and through our testing and external validation from the Locomotion Lab in Boulder, Colorado, Power Cranks have been proven to have the highest accuracy in real-world scenarios (+/- 1.5%). The Power Cranks are also easy to live with, with class-leading temperature compensation firmware and waterproof enclosures. Calibration is only required during seasonal-type fluctuations in temperature, and the included wrench makes battery swaps a breeze. - +/- 1.5% real-world accuracy tested on the WinMill and validated by the Locomotion Lab in Boulder, CO. - Works with ANT+ and Bluetooth devices. - Easy set-up and diagnostics with the Specialized Power app. (iOS and Android versions available). - Shimano 5800 generation 105 left-side power measurement. - Right crankarm and spider NOT included. - Available in 170-175mm crankarm lengths.