Choose your modelPlease note: XOSS G is the basic version of the GPS computer there is no ANT + transmission protocol and it does not support sensors; it has Bluetooth and supports uploading to mobile APPs.XOSS G + GPS computer with Bluetooth and ANT + support for adding speed / cadence sensor and heart rate monitor support upload to mobile APP;Cost-effective GPS Cycling Computer for EnthusiastsGPS BEIDOU GLONASS and GALILEO | 1.8'' LCD Display | 25hrs Battery Life | 15 Types of Data Recording | Third - Party Platforms SharingRecord 15 types of dataCurrent/AVG/MAX SPEEDCurrent/AVG/MAX Heart rateCurrent/AVG/MAX CADENCEElapsed Time/ Altitude/ CLOCKTrack Distance/SLOPE/Total DistanceXOSS G record 9 types of dataCurrent/AVG/MAX SPEEDElapsed Time/ Altitude/ CLOCKTrack Distance/SLOPE/Total Distance Origin:CN(Origin) Model Number:XOSS G/G+ Certification:CE,FCC,RoHS Stopwatch and Accessories:Wireless Stopwatch screen:1.8inch; Segment LCD Satellite system:GPS/Beidou/Glonass/Galileo Transmission:BLE4.0 Upload website:STRAVA/XOSS/Training Peaks battery:Built-in lithium battery battery capacity:500 mAh Working time:25hrs Battery Life waterproof:IPX7 ANT+,BLE4.0:with wireless cadence/speed sensor/heart rate monitor Light:automatic backlight Barometer:built-in barometer Input:5v 300mA