Bluetooth BLE technology
Power:3V Lithium Battery CR2032
Bluetooth Smart heart rate chest belt is made for the users of iPhone 4S, iPhone 5, NEW iPod Touch (5th generation), the NEW iPod Nano (7th generation), iPad (3rd and 4th generations) and Android 4.3 or above with bluetooth smart support .
This heart rate chest belt shares Apps,make your smartphone an all-in-one training device, without another monitor. Great for runners, cyclists, and other fitness lovers.
Some popular apps recommend :Wahoo fitness,Strava, RunKeeper, Endomondo, Runtastic and BLE Heart Rate Monitor and so on.