Wireless Bike Computer Cycling Stopwatch Speedometer

2.5 inch big display area screen;white color back light; good display effect under the sun, IML mirror surface, can see the digital clear, Rechargeable 800Mah battery, can use 120 hours, Use Bluetooth 4.0 technology, connect with wireless speed/cadence sensor, Support external Bluetooth 4.0 heart rate sensor, Can show more sport data calories, temperature, distance, cadence, heart rate, etc.

Sensor battery: CR2032 can replace

2 fixed way: hand bar extend holder and stem, Waterproof: IPX5