1. Maximum speed of 400 RPM, suitable for precision disassembly and repair of mobile phones and digital devices, offering high work efficiency. 2. Torque protection function prevents over-tightening, avoiding damage to small screws and motherboard components due to excessive torque, making repairs safer. 3. LED indicator clearly shows the speed setting, one-button switching between forward and reverse rotation, and supports silent operation. 4. 500mAh built-in battery with automatic sleep mode for power saving when idle, Type-C charging interface for convenient use. 5. Built-in auxiliary light ensures clear visibility in dimly lit work areas. 6. Compact and comfortable to hold, with a shock-resistant casing, suitable for mobile phone repair and digital DIY projects.