Clip On Swing Arm Book Light - This light features an ultra bright LED light that never needs replacement. The convex lens evenly distributes light. The long reaching arm unfolds; while the lamp itself pivots and folds up and down. Takes three AAA batteries (not included) that are housed in a spring-loaded clip. The clip will hold onto just about any size book. This light can be used with most universal AC adaptors. This light comes in metallic silver and metallic blue; orders will be filled with color that is currently in stock.