● High quality GPS chip inside.
● Use BLE wireless transmission protocol.
● Can connect with external heart rate mation, cadence sensor, power meter. 
● Support altitude, slope, VAM, altitude drawing etc. climb data display.
● Compass, pressure, temperature display.
● Heart rate Zone, training target manage etc.
● History cycling data storage, can use computer USB send to Strava,Komoot etc sport Webs.

● Segment LCD 2.0 inch inside steal.
● Speed,AVG speed,MAX speed,Distance,Time, ODO, Battery capacity display.
● Support alone buttons board control. 
● RX.TX. port connect with motor conntroller.