The S3+ senor is the updated version of the GEMINI 200. By reinstalling the battery, you can switch the device between speed sensor and cadence sensor modes. Supporting connection via both ANT+ and Bluetooth, S3+ is able to record data accurately, making it the best companion for a wide range of GPS computers and smartphone apps.
S3 Lite Speed/Cadence sensor switches between speed and cadence modes by reinstalling the battery. Using Bluetooth protocol, S3 Lite sensor provides accurate data and is the best companion for GPS bike computer and riding apps.