Features: 1. Convenient charging design: Built-in rechargeable lithium-ion battery for power supply, long-lasting performance and long service life. This screwdriver can use a charging cable, so you can use the USB port to plug it in anywhere, such as laptops, power banks, car chargers, etc. Lightweight: Its compact size makes it easy to store and carry. 3. Seiko electric screwdriver, small and light, very suitable for small light industries such as circuit maintenance, bicycle maintenance, electrical maintenance, switch installation, and daily installation.