The Dot Line 48 LED On-Camera Video Light measures 4 x 3 inches and is powered by two AA batteries (not included). The 48 LED 5600°K daylight-balanced bulbs are ideal for environments like outdoors or rooms with outdoor light. Darker environments will receive much more light, which may be an effect that is needed. Three filters (diffusion, tungsten, and fluorescent) and a protective filter wallet are included. The three filters adjust the 5600°K color to match different environments.
The light features shoe mounts all around -- one on the bottom for attaching to the top of a camera, and top- and side-mounts for additional light connections. You can obtain several of these lights and connect them to each other in different vertical and horizontal layouts.