The Ullman Devices FL-3SMDflexible magnetic SMD work light features three powerful SMD LEDs and provides 110 lumens of brightness. A strong heavy duty spring keeps the work light in a fixed position, adding sustained visibility. The powerful magnetic base contains six neodymium-iron-boron magnets, which attach to ferrous metals. This base also has a recessed swivel hook for increased versatility for non-metal surfaces. The FL-3SMD is powered by three AAA batteries.