• Connects your iPhone to any ANT+ fitness sensor such as heart rate monitors, cycling speed & cadence sensors and power meters.
• Can be used to pull data from an ANT+ GPS watch, such as Garmin, into an iPhone App for easy upload to the web.
• Wireless
ANT+ ultra low power technology.
• Very low power usage; 
no internal battery.
• Compatible with iPhone 3G, 3GS, 4, 4S, iPod touch, iPad; fits into 30-pin connector.

Product Description ------------------- Compatible with popular iOS Apps: Endomondo; MyRun; Run Meter and Run keeper; Runtastic. The Wahoo Key is an ANT+ Receiver designed to allow your iPhone to collect data from ANT+ sensors. The Wahoo Key is directly compatible with the iPhone 4s using the 30 pin port and iPhone 5 and later using a 30 pin to lightning adapter. If using the 30 pin to lightning adapter, it must be Apple Certified. .com ---- The Wahoo Key plugs into your iPhone and adds ANT+ wireless connectivity view larger ( https://images-na.ssl-images-.com/images/G/01/electronics/detail-page/WahooKeyWithPhone.jpg ) . The Wahoo Key view larger ( https://images-na.ssl-images-.com/images/G/01/electronics/detail-page/WahooKey.jpg ) . The Wahoo Key for iPhone transforms your iPhone into an all-in-one training partner. It wirelessly connects your iPhone to popular ANT+ fitness sensors and allows you to collect and track all your fitness data like heart rate, speed, and cadence through your iPhone. Works With Popular Apps ----------------------- Monitor your fitness stats in real time through our free Wahoo Fitness App or any of our partner apps, such as Run/Cyclemeter, RunKeeper, MyRUN/RIDE, Runtastic, Endomondo, and more. For a complete list of compatible apps, visit www.wahoofitness.com/Apps. Upload to Training Websites --------------------------- Workout data is easily and wirelessly uploaded to popular training websites such as TrainingPeaks, MyRUN, Nike+, Garmin Connect, and Strava so you can track your fitness over time and share with friends. You can also e-mail workout data to yourself or your coach. Ultra Low Energy, Compact, and Rugged ------------------------------------- The Wahoo Key has no internal battery and requires no charging, and is lightweight and easy to carry while you run, cycle, or workout. How It Works ------------ * The Wahoo Key works with iPhone 3G, 3GS, 4, and 4S, iPod touch 2, 3, and 4, and iPad, iPad 2, and iPad (3rd generation). * Plug your Wahoo Key into a compatible iPhone, iPod Touch, or iPad where you would normally plug in your charger. * Download the Wahoo Fitness Utility App for a step-by-step setup guide. * Pair with any Wahoo Fitness sensor (or any ANT+ enabled sensor) such as heart rate strap, stride sensor, or speed/cadence sensor. * Use our free Wahoo Fitness App or any of our partner apps to begin tracking your fitness. What's in the Box? ------------------ Wahoo Key for iPhone and user guide. Includes Wahoo App for Running and Cycling. Complete Your Workout with Wahoo Fitness ---------------------------------------- Wahoo Stride Sensor ( http://www..com/dp/B0047841FG ) Accurately track your distance, pace, and stride rate while walking, running or hiking Wahoo Key for iPhone ( http://www..com/dp/B0042WGO3Y ) Add ANT+ connectivity to your iPhone to enable communication with wireless fitness sensors Wahoo Bike Pack for iPhone ( http://www..com/dp/B004SNPCE4 ) Tough iPhone bike case with ANT+ sensor and Wahoo Speed/Cadence sensor to track your cycling data Wahoo Armband for iPhone ( http://www..com/dp/B0050KTWEK ) Comfort and protection for your iPhone or iPod Touch while working out Wahoo Blue HR Heart Rate Strap for iPhone 4S ( http://www..com/dp/B006NZH0TU ) The world's first Bluetooth Smart heart rate strap for the iPhone 4S (and other Bluetooth Smart Ready devices)