Gemini 210 S3+ Bluetooth-compatible ANT+ Speed Cadence Sensor for Garmin Bryton Bicycle Bike Computer
Specification:
Model: Gemini 210 S3+
Size: 8.85x29.8x38.3mm/0.35x1.17x1.51"
Waterproof: IP54
Sensor: Geomagnetic Sensor
Battery: 2032 Button Battery
Wireless Interface: Bluetooth-compatible / ant+
Weight: 9g
Battery life: 400 hours

How to use:
1. If the speed and cadence use together,need buy two pieces.
2. In speed mode, set the wheelset size on app then it can exact display speed.
3. If you use it for first time, you need remove the insulating paper to make sure the battery + up.
4. Reinstall battery can switch speed mode to cadence model or cadence mode to speed mode.

Note:
1. There may be slight size deviations due to manual measurement, different measuring methods and tools.
2. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.