Output Control Range: Digtal Display 1.0-6.0, VariableModeling Lamp: 250W Recycling Time: 0.8-3S Color Temperature: 5600+/-200K Flash Duration: 1/800-1/1200S Modeling Lamp Working Mode: Modeling light ON/OFF, Full, Full Variable Flash Output Precision: +/-0.1EV Recycling indication: Beeper/Modeling light indication Working Voltage: 170V-240 or 100V-120V, Automatic voltage regulator circuit Triggering Method: Optical slave/Sync cable/Test buttonTriggering Voltage: 12V Lower voltage trigger Cooling Fan: Yes Technical Speciality: Light regulating digital display, Flash auto release.Technical speciality: Flash auto purge function/overheat protection/light regulation digital distlay