The cordless Electric Screwdriver is ideal for everyday home projects and features a 4V MAX rechargeable lithium-ion battery and USB port for convenient charging. Seven inches long, the Electric Screwdriver's compact size and slim design allows users to work in tight spaces, awkward angles and provides additional reach with the inclusion of a bit extender. At 4 volts, it is surprisingly strong and packed with power to drive screws two times faster* than similar competitive products in the market. The Dremel Electric Screwdriver provides more control for screw-driving task with its unique six-position clutch. This feature lets the user set the proper amount of torque necessary based on application. It also it has Smart Stop Technology, which recognizes when the driver bit is not fully seated in the screw head and cuts off power, reducing damage to the screw head and removing user error.