Features1LCD display functions: Speed, power assist mode, power indicator, fault indication, total mileage, single mileage, headlight display, single riding time. 2Controller/setting functions: Power switch, headlight switch, 6km/h assist control, wheel diameter setting, maximum speed setting, automatic sleep setting, backlight brightness setting, voltage setting. 3Suitable for electric bikes and scooters with 22mm handlebar diameter. 4Great replacement for 250W/350W electric bikes and scooters.SpecificationFeatures:LCD display functions: Speed, power assist mode, power indicator, fault indication, total mileage, single mileage, headlight display, single riding time.Controller/setting functions: Power switch, headlight switch, 6km/h assist control, wheel diameter setting, maximum speed setting, automatic sleep setting, backlight brightness setting, voltage setting.Suitable for electric bikes and scooters with 22mm handlebar diameter.Great replacement for 250W/350W electric bikes and scooters.Specifications:LCD Display:Material: ABSCommunication Protocol: UARTWaterproof Grade: IP65Size: 8.2 * 4.8 * 4.3cm / 3.2 * 1.9 * 1.7inClamp Diameter: 2.2cm / 0.9inController:Material: Aluminum alloySize: 8.9 * 5.2 * 3cm / 3.5 * 2 * 1.2inVoltage: 24V-48V / 36V-60V (optional)24V-48V:Power: 250W/350WLower Voltage: DC20V/30V/40VCurrent Limit: 13AAngle: 120/60 Degree36V-60V:Power: 250W/350WLower Voltage: DC30V/40V/50VCurrent Limit: 13ADegree Brake: LowAngle: 120/60 DegreePackage List:1 * LCD Display Panel1 * ControllerPackage List1 * LCD Display Panel1 * Controller