MAGENE S3+ ANT+ Bluetooth Bike Speed Cadence Sensor ζ☆ <д г] E7S1 D8K6 G1W5 B3M5
Sensor: Geomagnetic sensor. Product: Speed sensor. 1pcs speed sensor (with a battery). In speed mode, you need to set the wheel size to use the app. Install the battery to switch the mode speed model to the rhythm model.