Autosense Technology drives most screws flush on the first try. Electronic clutch automatically stops when a screw is in place. Lithium-ion battery is always ready and holds a charge up to 18 months. LED (light emitting diode) work light illuminates the surface for easier drilling in dark places. Drills/drives through wood, metal, and plastic. Includes 20V MAX lithium-ion battery, LCS1620 charger, 1 double-ended bit.