The GODOX AD400Pro is a 400WS wireless strobe with a maximum high speed sync speed of 1/8000th of a second. It uses Godox's 2.4GHz Wireless X System that's compatible with Canon E-TTL II, Nikon i-TTL autoflash, Sony, Fujifilm, Olympus, and Panasonic TTL systems. AD400 strobes fill the gap between the current AD200 and AD600Pro strobes, in terms of both size and power.
2.4 GHz wireless system with a range of 328' (100m)
Supports Nikon, Canon, Fujifilm, Sony, Olympus, and Panasonic TTL systems
400Ws, 1/256 to 1/1 Power Output
Guide number of 236' (72m) at ISO 100
Up to 390 Full-Power Flashes, 1/8000 Sec High-Speed Sync
0.01-0.9 Sec Recycling Time, Flash Duration: 1/240 to 1/12,820 Sec
First curtain and second curtain sync modes
5 controllable slave groups and 32 channels
Can work as an optical slave with S1 and S2 modes