1The 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. 4The instrument can show real-time speed, battery power, gear indicating fault code interface, etc. 5Instrument control parameters include: backlight brightness battery voltage level, vehicle wheel diameter, speed coefficient speed measurement magnetic steel number, zero/non-zero start selection, electric/power/hybrid mode selection total mileage reset, etc. Condition: 100% Brand New Item Type: E-bike Controller Material: Plastic + LCD + metal Color: as picture shown Option: 250W 36V, 250W 48V Suitable for diameter: 22.2-22.7mm/0.87-0.89inch Controller size: 88x52x30mm/3.5x2x1.2inch Handlebar size: 192x88x82mm/7.6x3.5x3.2inch LCD size: 39x22mm/1.5x0.9inch border: .5pt solid000;};border: 1px solid000important;}1 x Controller2 x Keys1 Pair x Handlebar