VISICO5 II 2.4G TTL Flash Strobe 400Ws 1/8000s High Speed Sync Monolight for Bowens Mount Outdoor Shooting Item Type: Outdoor Flash Strobe Material: Plastic Gross Weight: 3450g / 121.7oz Battery Type: Lithium ion battery 6000mah (shipped with matching battery) Model: VISICO5 II Output Power: 400W Guide Number: (2m, ISO100) 1/60 Standard lens SF 620: 68 Flash Power Output Range: 1/128-1/1 LED Modeling Bulb Power: 13W Color Temperature (in constant color temperature mode): 5600±200K Flash Duration (in non constant color temperature mode): 1/650-1/10000 seconds Flash Mode: TTL, M, Multi Strobe Flash: 20 times of strobe; 30Hz strobe frequency Flash Exposure Compensation (FEC): ±3 stops in 1/3 stop increments (in TTL mode) Sync Mode: High speed sync (up to 1/8000s), front curtain sync, rear curtain sync 2.4G Wireless Channel: channel 1-8 Wireless Radio Identification Number: 1 - 30 Controllable Slave Unit Groups: A, B, C three groups Synchronization Trigger Method: 3.5mm synchronization line, 2.4G wireless remote control VC 818TX (sold separately) Fan: Yes Buzzer: Yes Battery Level Indicator: Yes Full Power Flash Times: 500 times Full Power Recycling Time: 0.01-2.8s seconds External Interface: PC port, USB port How e VISICO5 with Other Flashes 1. VISICO5 is paired with other VISICO flash units (VCHHLR, VCHH, VE PLUS, VL PLUS): use the same VC 801TX trigger to achieve flash triggering and power adjustment. 2. VISICO5 is matched with other VISICO flash units (VCHHLR, VCHH, VE PLUS, VL PLUS): use the VC 818TX trigger and connect the VC 818RX receiver to other VISICO flash units to achieve flash triggering and power adjustment. 3. VISICO5 can be matched with VISICO camera flash, using the camera flash as the main light or using the VC 818TX trigger to achieve flash triggering and power adjustment. 4. Use VISICO5 with other brands of flash or camera flash with TTL multi contact hot shoe: use the matching VC 818TX trigger, and connect the VC 818RX receiver to other brands of flash or camera flash, Flash triggering and power adjustment are implemented together (Matched separately for 2 different brands of cameras). 5. VISICO5 is paired with other brands of single contact or flash or camera flashes triggered by connecting cables: using VC 818TX trigger and VC 818RX receiver can achieve flash triggering together.