NEEWER Q4 400Ws 2.4G TTL Flash 1/8000 HSS Outdoor Studio Flash Strobe Photography Monolight Speedlite

SpecificationsModel: Q4Power: 400WsFlash Duration: 1/209s to 1/10989sRecycling Time: Approx. 0.01-1.2sPower Output 9 steps: 1/256-1/1Flash Modes: M/Multi (Wireless Off), TTL/M/MUTIL (Receiver unit of radio transmission)Optic Slave Flash: S1/S2Delay Flash: 0.01-30sStroboscopic Flash: Provided (up to 100 times, 199Hz)Sync Modes: HSS (up to 1/8000s), first/second curtain syncFull Power Flash: 400Modelling Lamp (LED): 30W/5600K/CRI 95+Color Temperature: 5600±200KFlash Exposure Compensation(FEC): Manual. FEB: +/-3 stops in 1/3 stops incrementsWireless 2.4G Q System: 32 Channels, 5 Groups (A, B, C, D, E)2.4G Transmission Range: 328'/100mWireless ID: In order to avoid interference, you can change the wireless transmission channel and wireless ID of the master and slave unit and make them consistent before triggering. Power Supply: Lithium Battery (included) / DC Adapter (included)Energy Saving: The flash can be set to automatically power off without operation for 30-120 minutes.Trigger Modes: 2.4G, S1/S2, 3.5mm Synchronous Cord, Flash Test LeadRechargeable Li ion Battery: 21.6V/60.48Wh/2800mAhMasking Function: ✔Built in Silent Fan: ✔Built in Buzzer: ✔Display Flash Duration: ✔Battery Power Indication: ✔Display: Dot Matrix ScreenStrobe Size: 7.3" x 8.3" x 2.2"/ 18.5 x 21.2 x 5.5cmNet Weight with Battery (no flash tube & reflector): 4.4lb/1.98kgGross Weight: 4.94lb/2.24kg Package Contents1 x Q4 Flash Strobe1 x Modeling Lamp1 x Standard Reflector1 x Lithium Battery1 x Handle1 x Power adapter1 x Power Cord1 x Carrying Case