Features1 Material: The controller housing is made of metal with notched design, which can protect the internal circuitry due to great heat dissipation, thus avoiding thermal overload. The display is made of ABS material, which is lightweight and sturdy, with fine workmanship, great toughness and waterproof performance, providing better protection for the internal circuitry and making it more durable. 2HD Backlight LCD Display: Built in intelligent chip, integrated gear switching, accurate power display speed and cycling mileage, real time cycling data at a glance, with backlight design, can be seen clearly no matter day and night, making travel more convenient. 3Real Time Data Display Panel: When riding a bike, the panel will display many useful data on your bike, such as switch buttons, light switch, battery level and other functions, a display can keep you abreast of the situation. 4DIY Accessories: This lithium battery modification kit includes one 17A motor controller and one display panel, the display mounting diameter is 22.2mm, suitable for DIY refit, to meet all needs. 5Applications: The 17A controller is suitable for 350W motor, can be used for electric bike, electric scooter, folding car, etc. Easy to maintain, greatly improves the fun of riding, suitable for cyclists who like a challenge.SpecificationItem Type: Bike Lithium Modification KitMaterial: ABS, rubber, aluminum alloy, metalWeight: Approx. 436g/15.4ozController Size: Approx. 95x50x30mm/3.7x2.0x1.2inCurrent: 171AController Speed Setting: 1.1 to 4.2VApplicable Motor Power: 350WPackage List1 xController1 x Display1 x Specification