With an LED light embedded in each side of its handle plus an extra wide (1-5/16 inch) jaw opening, the 9-inch Lighted Adjustable Wrench is designed to improve visibility and eliminate the need for a separate light source to better see the task at hand. Operating on a wristwatch-type battery, the light is controlled by a recessed button in the tool's handle that's been coated to cushion the grip and help prevent slipping.