Battery operated for cordless use. Brilliant LEDs last 50000 hours. 12 in. bendable neck. 3 AAA Batteries included. This handy portable light features 4 brilliant LED bulbs which last 50000 hours. Uses just 3 AAA batteries (included) to provide convenient lighting anywhere. Energy efficient design yields double the battery life of other lights! Typical life: 4-6 hours continuous a whole summer with intermittent on/off operation. Clip the light onto any shelf up to 1 in. thick and bend the gooseneck to the desired angle.