L-300D-L-1000D studio flash light, with digital display of output power, 1.0-6.0, ... /OFF,Full,VariableFlash output precision±0.1EVRecycling indicationLED/Beeper/Modeling light indicationWorking voltage170V240V or 100V120V Automatic voltage regulator circuitTriggering methodOptical slave ... fanYesTechnical specialitylight regulating digital display, auto replease TS-600D Digital studio flash light