【Note】The bicycle odometer has been upgraded to switch mile/kilometer system; You can choose the mile/km display you want in the APP settings; (Before using the G+ bike computer for the first time, you need to download the APP, where you can share your exercises by associating your Trainingpeaks account)【Sync To】Professional cycling speedometer riding APP supports uploading your riding data via Bluetooth; The G+ wireless bike computer can also use Bluetooth to synchronize cadence and heart rate data to APP, then integrates with Trainingpeak to make sharing more enjoyable, training analysis more comprehensive【ANT+ Sensor Compatibility】GPS bike computer can support heart rate monitor, speed and cadence sensors, connect power meter via ANT+, and if the sensor is connected to the cycling speedometer, you will get all the data you want for multiple rides; (Need to purchase additional sensors)【4 Satellite Positioning System】Supports GPS, Beidou, Galileo, and Glonass global navigation systems; Fast positioning and higher accuracy; Calculate sunrise and sunset times based on GPS information to achieve automatic GPS time calibration and accurate time information; (Note: Positioning speed is affected by changes in weather and other conditions)【Automatic Backlight and Waterproof】The wireless bike speedometer is designed with a large non-glare auto-backlit screen that is highly visible in the sunlight and can present multiple data, so you can read your data easier and more clearly, day or night; IPX7 waterproof performance allows GPS bicycle speedometer work normally in raining days