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 1-3 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 shownOverall size: approx. 48x48x80mm/1.9x1.9x3.1inchLCD size: 52x38mm/2x1.5inchInstall diameter: 22.5mm/0.9inchPackage List1 x LCD Display1 x Controller