The FJ400 s, lithium-ion battery that will give you 480 full-power flashes on a two-hour charge. The FJ400 has a nine-stop power range in 0.1 stop increments and recycles in a fast 0.5 to 0.9 seconds. It is backed by a 1 19,000 peak action-stopping flash duration in Freeze Mode, is capable of 20 fps, and supports High Speed Sync up to 1 8000 second as well as front and rear curtain sync.

One of the FJ400 s exciting features is its TTL option. The flash has an integrated 2.4 GHz receiver that has 16 channels, and 32 groups that with an FJ-X3m trigger will accept TTL signals at a distance of up to 985 from Canon, Nikon, Sony (with adapter), FUJIFILM, Panasonic Lumix, and Olympus cameras. The flash has a 5 8 receiver to mount on industry-standard light stands, as well as a USB-C port for Windows and Mac firmware updates.