Features: This display and controller adopt good quality materials, lightweight, rainproof, sturdy and durable. LED display can clearly show the battery capacity, several buttons for quick operation of rate adjustment and headlight, easy to use. The controller is brushless type, working silently and stably, won't suddenly accelerate or decrease the rate to keep you safe. With a mount on the back of LED display for easy installation, suitable for most handlebars.  Suitable for electric bicycles, vehicles, scooters.  Specification: Material: Plastic + Metal Color: Shown as picture Options: 24V; 36V; 48V Power: 250W/350W Automatic Cruise: 6KM/H (press the MODE button) Controller Size: Approx. 9 x 5.2 x 3.2cm / 3.54 x 2.04 x 1.26inch Display Size: Approx. 8 x 4.2 X 1.5cm / 3.14 x 1.65 x 0.59inch Weight: Approx. 308g Package List: 1 x LED Display 1 x Controller