Powerology 30 Bits Electric Screwdriver Gun is a rechargeable convenient all-in-one tool kit. Its 30 interchangeable functional bits providing a comprehensive solution for various assembly and repair tasks. With 2 to 3 hours of charging time of its 2200mAh battery and 220 RPM motor supports 6 speed levels in order to enable precise and controlled work. In order to adjust the speed, this screwless device has a rotatable ring which rotates around a digital display that gives you information about the speed level and four grid battery stage. Toward the front end, it has a built-in LED Light to ensure efficient working in poorly lit areas.