Ideal for assembling furniture toys electronics and more. Runs on a 4V MAX lithium-ion battery that holds charge up to 18 months. Rotobit rotating bit cartridge stores bits. LED Light illuminates working area. On board magnet holds extra screws. Max RPM: 180 RPM. Includes: Charger. #10 Torque bit. #20 Torque bit. #4 Slotted bit. #1 Square bit. #2 Square bit. #4 Hex bit. #0 Phillips head bit. #2 Phillips head bit.