The FJ400 runs on a powerful, removable 14.8V, 4400mAh lithium-ion polymer battery that will give you 480 full and thousands of low-power flashes on a 2.5-hour charge. The battery has LED status indicators to keep you appraised of remaining power. A 20W LED modeling light is employed for minimal power drain. Alternatively, when you’re shooting in the studio you can run the flash head with AC current using the included adapter. The FJ400 ships with a magnetic 5.5″ reflector with three CTO filters to match other fixtures, warm ambient light conditions, or just for creative expression. A magnetic diffusion filter is included to soften the output, as is an insert that allows use of any of Westcott’s Rapid Box Switch softboxes. A custom-made travel case is also provided for storage and transport.