MAGENE S3+ ANT+ Bluetooth Bike Speed Cadence Sensor ζ☆ <д '√ C7Q6 T6B4 Y2P4 N4R7
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.