Features: Using a high-performance 32-bit MCU, it supports protection functions for overvoltage, overcurrent, overheating, undervoltage, etc. Support fixed speed cruise, braking energy recovery, and adjustable speed limit. The controller can switch between sports and comfort modes. Through the mobile phone APP, it not only can upgrade the firmware , but can set the parameters or view the status. Double closed-loop system, quiet operation, smooth cut-in for secondary acceleration. It comes with a headlight and a taillight, which make it safer to ride at night. Specifications: Material: Aluminum + ABS + PCB Board Max. Speed: 30KM/H Novice Speed Limit: 15KM/H Climbing Angle: 15 degrees Max. Torque of Drive Motor: 35NM * 2 Max. Power of Drive Motor: 350W * 2 Instantaneous Maximum Power: 2000W Package Size: 180 * 180 * 50mm/ 7.1 * 7.1 * 2.0in Package Weight: 330g/ 11.6oz Packing List: 1 * Controller Board 1 * Digital Display Board 1 * Front Light 1 * Tail Light 1 * Communication Line 1 * Accelerator