This display and controller are made of good quality materials, are lightweight, rainproof, sturdy, and durable. The LED display can clearly show battery capacity, multiple buttons for quick adjustment of speed and headlights, easy to use. The controller is of brushless type, works silently and stably, will not suddenly accelerate or decelerate to keep you safe. With a bracket on the back of the LED display for easy installation, suitable for most handlebars. Suitable for electric bicycles, cars, scooters. Voltage: 48V Power: 250W/350W (Universal) Automatic: 6KM/H (press MODE button) Speed mode: 40%; 70% 100% Controller size: Approx. 8.9 x 5.2 x 3 cm Display size: Approx. 8.1 x 4.2 X 4.9 cm Color: Black + silver Material: metal + plastic Package contents: 1 * LED display 1 * Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.