This product is made of fine materials, light quality, small burden after installation, easy to install, practical, LED display is clear.<br> Features:<br> This display and controller adopt fine quality materials, lightweight, rainproof, sturdy and practical.<br> LED display can clearly show the battery capacity, several buttons for quick operation of speed adjustment and headlight, easy to use.<br> The controller is brushless type, working silently and stably, won't suddenly accelerate or decrease the speed to keep you safe.<br> With a mount on the back of LED display for easy installation, suitable for most handlebars.?<br> Suitable for electric bicycles, cars, scooters.<br> Specification:<br> Type: 24V, 36V, ?48V (optional)<br> Material: plastics+metal<br> Power: 250W / 350W<br> Speed model :(1:2:3) 33%, 66%, 100%<br> Controller size: about 86 * 52 * 30mm / 3.4 * 2.0 * 1.2in<br> Display size: 80 * 42 * 15mm / 3.1 * 1.7 * 0.6in<br> Item weight: 300g / 10.6ounce<br> Package size: 200 * 50 * 80mm / 7.9 * 2.0 * 3.1in<br> Package weight: 308g / 10.9ounce<br> Note: controller with power switch module (output battery voltage, power can be connected to 50W)<br> Package List:<br> 1 * LED Display<br> 1 * Controller