4V Lithium Ion ROTO-BIT Storage Screwdrive *Sub Brand: ROTO-BIT *Voltage: 4 volts *Battery Type: Lithium Ion *Corded orCordless: Cordless *Model Type: Storage *Product Type: Screwdriver with Bit Set *Number of Speeds: 1 *Speed: 180 rpm *Chuck Type: Fixed 1/4" Drive *Storage Screwdriver features a rotating bit cartridge that stores bits and provides easy accessibility *Includes 8 bits useful for a wide variety of tasks *Features a built-in 4V MAX Lithium-Ion battery that holds a charge up to 18 months  *On-board magnet holds extra screws which frees up your hands for other tasks *Has an LED light which illuminates your work surface *Backed by BLACK+DECKER's 2 year warranty *Bits Included: #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 *RPM: 180 rpm *Charger is included