This Controller is made of , which can withstand the lasting use. Features the metal material, which has high durability, not easy to deform. Fine workmanship, and practicality. Features - - Material:Metal - Size: About 24.00X7.00X4.00cm/9.43X2.75X1.57in - Power: 350W - Voltage: 36V/48V - Output Current: 15A-18A - Turn Voltage: 1.1±4.2V - and easy to use, not easy to break or deform, reusable and can be applied for a longtime. - There are no other exposed parts in the shell to avoid falling and breaking, easy to install. - Lightweight and portable, small size, professional electric bike controller, simple operation - This product is mainly used for replacing old scooter controller board, suitable for electric scooter. - It can solve the malfunctions of some electric scooters and is a practical substitute part. Package list: 3 x electric bike controller