1 ON/OFF function of power supply, it will automatically shut down after stby for 5 minutes;2 Four-bit intelligent power display can be a true reflection of the state of battery charge to guarantee the riding distance;3 High, middle low gears of imitation torque boost of switch gears gear indicator display, with gear memory function, power on can automatically recover the gear state during power off;4 6Km/h boost function, the boost light is blinking during boost, it can be used by the rider during driving a vehicle, the vehicle driving will be easy;5 Under-voltage indication function, when the battery is in under-voltage, the under-voltage indicator flashes;6 The adoption of five- line of digital communication is with a self-setting function of versatile parameters, users can adjust the settings such as motor parameters, velocity parameters, speed parameter according to different models; 7 The instrument is with good interchangeability, different instruments can directly exchange with each other copy the data parameters; 8 The optional power supply voltage is 24V, 36V 48V; colour:BlackMaterial:plasticPackage Contents:1 DisplayOnly the above package content, other products are not included Note: Light shooting different displays may cause the color of the item in the picture a little different from the real thing The measurement allowed error is 1-3cm