COMFORTABLE RIDING: perfect accessory for electric bike, scooter, etc. Bringing you a more comfortable riding experience. GROOVE SHELL DESIGN: adopts aluminum shell with groove design ensures good heat dissipation and high temperature resistance ability, which provides better protection for inner circuit. STEADY AND SENSITIVE: allows steady and sensitive speed control of braking and direction changes. KEEP LOW MALFUNCTION: The wires and interfaces have good contact, and ensure low malfunction for long time use. WITH LCD PANEL: equipped with LCD panel, and it supports multiple setting functions, such as riding speed display, battery status, power assist adjustment and more. Material: Aluminum + Plastic. Rated Working Voltage: 36V/48V. Low Voltage Protection: 31V/42V. 1 x Brushless Controller. 1 x LCD Panel. 1 x Pair of Brake. 1 x Pair of Speed Adjustment Throttle. 1 x Hall Sensor. 1 x Speed Assist Sensor.