Magene S3 wireless speed and cadence sensor The latest model of 2-in-1 sensor for GPS computers. Take your workouts to the next level. Specification: Compatible with 90% of devices on the market. Dual speed and cadence sensor Simple and quick change of the operating mode. Connectivity using ANT and Bluetooth 4.0 protocols Easy and quick assembly , without the use of magnets IP66 waterproof Temperature range from -20 C to 50 C 500h of battery life CR2032 battery (included) Weight 8.8g Dimensions 8.8 x 29.8 x 38.3mm Compatible with GPS computers: Garmin Bryton Wahoo Fleece TomTom Bontrager Suunto Tacx Igpsport e.t.c Connectivity with external applications: Zwift MapMyRide Strava Wahoo Fitness Nike Sport Tracker TrainerRoad e.t.c Reinstalling the batteries allows you to switch between the modes: speed sensor and cadence sensor. Red color - cadence sensor mode. Mounted on the crank arm. Green color - speed sensor mode. Installation on any wheel hub. To pair a device: Activate the ANT or Bluetooth protocol on the GPS computer / application. Turn on the sensor while using the battery. Screw the crank arm / wheel. The package contains: 1x sensor 1x rubber anti-skid pad 1x rubber band for mounting on the crank arm 1x rubber band for mounting on the wheel hub 1x CB2032 battery manual user instructions