Studio flash light Power: 300W Guide No.: 55GN Output control range: 1/32 Full variable Moddeling lamp: 150W Recycling time: 0.8 2.5S Color Temperature: 5600+/-200K Flash Duration: 1/800 1/1200S Modeling lamp working mode: Modeling light ON/OFF, Full, Variable Flash output precision: Beeper/Modeling light indication Working Voltage: 170 240V or 100 120V, Automatic voltage regulator circurt. Triggering Voltage: 12V lower voltage trigger. Cooling fan: with Built-in wireless trigger, rapid recharging.