ROCKBROS Bicycle Computer ANT+ Cadence Speed Sensor

SPECIFICATIONS   Brand Name: ROCKBROS   Model Number: 29210018001 Stopwatch and Accessories: Wireless Stopwatch Color: Black Weight: About 9g Battery: 220mAh CR2032 Standby time: 300 days Range: 600 hours(pedal frequency) / 400 hours (speed) Waterproof grade: IP67 Assurance: 1 year     Product details Name: Speed pedal frequency two-in-one sensor Model number: 29210018001 Material: ABS Color: Black Weight: About 9g Battery: 220mAh CR2032 Range: 600 hours(pedal frequency) / 400 hours (speed) Standby time: 300 days Waterproof grade: IP67   Dual-mode speedpedal frequency sensor wide compatibility, one machine and simple installation     ATN+/ BLUETOOTH SUPPORTS MORE DEVICESAND SOFTWARE, compatible with mainstream devices in the market, and rest assured to use   FREE CHOICE OF TWO MODES when the sensor works, it can only work with one function.lf you want to obtain both speed and frequency data atthe same time, you need to buy two.   ONE-CLICK SWITCHING MODE DOES