The Bescor LED-40 On-Camera Light & AC Power Supply Kit
combines a daylight balanced on-camera LED light with a U.S. power supply for continuous use indoors.
The light provides a 40W equivalent illumination in a wide 20 ft beam. Alternative to the power supply, it can also be powered by AAA batteries, and three are included with it, as are a universal shoe mount and side arm bracket for off-axis lighting. The LED-40 light measures a handy 3" x 2.5".