Features:The controller shell is made of aluminium alloy, which can protect the inner circuit and good for heat dissipation to avoid thermal overloading.This item is a brushless motor controller, it can provide steady speed, silent working, sensitive control of braking and direction changes. The wires and interfaces are durable, and ensure low malfunction of long time use. Each interface has different color for your easy installation.Suitable for electric bicycles, scooter, etc.Specification:Material: Aluminium alloyRated Power: 800WMax. Current: 38APhrase Angle: 60/120 (automatic identification adaptation)Size: Approx. 178 * 84 * 44mm / 7 * 3.3 * 1.7inchCable Length: Approx. 15cm / 5.91inchWeight: Approx. 680gPackage List:1 * Controller.