4V, Max, Lithium-Ion, Cordless, Rechargeable Screwdriver With Charger Roto Bit Rotating Bit, Cartridge Stores Bits & Provides Easy Accessibility, LED Light Illuminates Work Surface, On Board Magnet Holds Extra Screws, Freeing Up Hands, Ideal For Furniture Assembly & Everyday Household Screw Driving Needs, 4V Max Lithium-Ion Battery Holds Charge Up To 18 Months, Includes: Charger & 8 Screwdriving Bits For A Variety Of Tasks.