Original Magene S3+ Speed Cadence Sensor ANT+ Bluetooth Computer Speedmeter for Garmin iGPSPORT Bryton Dual Sensor Bike Computer Original Magene S3+ Speed Cadence Sensor ANT+ Bluetooth Computer Speedmeter for Garmin iGPSPORT Bryton Dual Sensor Bike Computer. Sale price : $4.19 Category : Sports & Entertainment