How to use<br> <br> 1. When using the speed and cadence together, need to buy two pieces<br> <br> 2. In speed model, use the app need set the wheelset size<br> <br> Then can Accurate display speed<br> <br> 3. The first use of the equipment, need remove the insulating paper<br> <br> Make sure the battery up<br> <br> 4. Install battery can Switching Mode speed model to cadence model<br> <br> Or Cadence model to Speed model<br> <br> Specifications:<br> <br> Product: Speed sensor cadance 2 in 1<br> <br> Model: gemini210<br> <br> Size: 8.85x29.8x38.3mm<br> <br> Waterproof: ip54<br> <br> Sensor: Geomagnetic sensor<br> <br> Battery: 2032 button battery<br> <br> Wireless interface: Bluetooth / ant<br> <br> Weight: 9g<br> <br> Battery lift: 400 hours<br> <br> Package Included:<br> <br> 1*Cadence sensor<br> <br> <br> <br> <br> <br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store