Features1The screen is made of high quality materials, lightweight, rain resistant and durable. 2The LCD screen clearly displays status and data. 3Simple to install and use. 4Backlight brightness level 13 can be set through the meter, from dark to bright; Set the meter/mile system, set the voltage level 24V/36V/48V/60V intelligent identification, battery voltage, set the sleep mode, can set not sleep or timing. 5Dormancy such as: set 10,10 minutes no action to power off; Gear setting mode is divided into 3 gear /4 gear /5 gear /6 gear /9 gear,0 gear off, set wheel diameter, magnetic pole ratio shows accurate speed and mileage set speed limit.SpecificationItem Type: E-bike ControllerMaterial: Plastic + LCD + metalColor: as picture shown12 Tube Dimensions: 146 x 85 x 45mmTop View Size Of The Instrument: 47.5 x 49.5mmAppearance Size Of The Instrument: 47.5 x 80.5mmLCD Size: 52x38mm/2x1.5inchInstall Diameter: 22.5mm/0.9inchPackage List1 x LCD Display1 x Controller