This premium LCD Display Backlight Panel and 36V/48V 250/500W Brushless Motor Speed Controller for electric bicycles, cars, scooters, motorcycles, mini bikes etc. The panel show the battery capacity clearly, several buttons for quick operation of speed adjustment and headlight, easy to use. Grooved aluminum alloy shell provides good heat dissipation and high temperature resistance ability to ensure safety using. Brushless motor controller allows steady speed and sensitive control of braking and direction changes. High Quality wires and interfaces provide great contacts performance, efficiency and more energy-saving.250W:835331mm(As Picture Show)Approx. 500W:1205343mm(As Picture Show)Approx. Panel Size: 8450mm(As Picture Show)Approx. 1 Motor Controller with Panel Kits. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. Please allow slight manual measurement deviation for the data. Also, the each additional item means. The the same color and size. Transit time may be a little delayed because of the. If you have any questions. This item is in the category "Sporting Goods\Cycling\Bikes". The seller is "phoenixawaken777" and is located in this country: CN. This item can be shipped worldwide.