Godox QT-600 600 w/s Monolight (100 - 120V) Fast recycling time : 0.05-1.2s, up to 10 continuous flashes per second Flash duration : 1/5000-1/800s (t.1) for stopping of fast moving objects and action. Precise power regulation : 50 steps of power control from 5.0 to 10.0 (1/128th-1/1) 150W Adjustable Modeling Lamp Wireless power control and flash triggering via FT16 Transmitter / Receiver. Controls flash power level, modeling light, buzzer, etc