This cycling cadence speed sensor which can sense bicycle pedal return speed and wheel speed back， with iOS App， via low-power Bluetooth 4.0 wireless interface， the pedal return speed and wheel speed transfer back to your iPhone 4S / Applications 5 / iPad mini on， so that you continue to monitor and analyze training results in training your iOS device into a bicycle with a stopwatch. Without any additional adapter， it can be directly connected to the radio.
Compatible applications smartphone: IPHONE 4S， IPHONE5， NewIPAD & IPAD mini
Features: Measurement bike speed and pedaling rhythm scripts; Bluetooth smart data transfer (Bluetooth 4.0) of iPhone 4S / 5 and the like; the smart phone into a professional bicycle computer; includes installation material
Sensor size: 19mm x 57mm x 37mm
Sensor Weight: 23g
Wireless transmission: Bluetooth 4.0
Cycling cadence speed sensor: pedal magnet * 1
Speed ??Sensor: Wheel magnet * 1
Fixtures: Tie * 4
Waterproof: 30 meters (1 meter underwater for 30 minutes)
Battery: 3V CR2032 battery (life: one hour one day can be 2 years)
Compatibility: iPhone 4S， iPhone 5， iPod touch 5th generation， iPad 3rd generation， iPad 4th generation， iPad mini
Transmission distance: 10 meters
Operating temperature: -10 ° C ~ + 50 ° C