Wahoo Fitness Bike Case for iPhone with Speed and CadenceThe Wahoo Fitness Bike Case for iPhone with Speed and Cadence turns your iPhone into a fully functional cycling computer and GPS. Just mount it, choose your favorite cycling app and hit the road or trail.
Features: Built-in ANT+ radio transceiver. Fits iPhone 3G, 3GS, 4 and 4S with custom rubber liners to switch between phone types. Water and shock resistant. iPhone case attaches to bike via leave-on mount. Adjustable to portrait or landscape orientation. Touch screen cover allows for full functionality. ANT+ ultra low power wireless technology sensors track both speed and cadence. Universal mounting rail for bicycle mount and auxiliary battery (sold separately). Optional Wahoo Fitness auxiliary battery provides over twice the total battery life (sold separately).
Ports and Connectors: Earphone jack. microUSB connector. Front camera port window. Rear camera port window (no flash capability). Home button actuator pad.