SKIL 2356-01 360 Quick-Select 12-Bit Interchangeable Power Screwdriver Fully Integrated Bit Management: 12-bit illuminated window magazine keeps your most popular bits close at hand- just rotate to select desired bit USB Charging: Supports universal charging with computers, cell phones, and car chargers for total flexibility 4-Volt Lithium-Ion 1.5Ah cell for plenty of power and longer run time, with the ability of holding a charge for up to 18-months SITE-LIGHT LED work light facilitates use in dimly lit areas Battery Level Indicator: Shows when battery is in need of a charge