2 Pcs Godox AD600BM 600Ws GN87 1/8000 HSS Outdoor Flash Strobe Monolight with X1T-S Wireless Flash Transmitter, 8700mAh Battery, Portable Flash Head and other Useful Flash Accessories 600Ws, GN87, 9 steps of power adjustment(1/1 to 1/256). Stable color temperature at 5600200K over the entire power range. Fully support High-speed sync (up to 1/8000 seconds), first-curtain sync, and second-curtain sync. Optical and Built-in 2.4G wireless transmission to offer stable output. 80M Wireless Control with precision. 11.1V/8700mAh large capacity lithium battery pack to provide 500 full power flashes and recycle in 0.01-2.5 second. DC/AC are both applicable(Change to AC alternating current module after lithium battery pack detached). 10W LED modeling lamp can adjust light brightness in three steps. Large and clear dot-matrix LCD panel offers convenient operation. With handle to adjust different shooting directions of the flash. USB firmware upgrades helps keep pace with the latest technology.