Description: For Nikon SB5000, SB900, SB910, SB800, SB600, SB700, SB300, SB400, SB500, SB30, R1C1, SB-R200, SB-N7, LD-1000, SB-29S, SL-1, SB-N5, SB-22S, etc. Group flash triggers, can operate three sets of flash at the same time, seven different groups. Wireless sync trigger Set-top flash, video flash, external flash. The flash sync speed can reach 1/320 second. Has the function of automatically waking up the flash. It can be controlled by the main camera to control other cameras. TTL pass-through function (the product itself does not have TTL function). Specification: Material: Plastic Size: 84x42x38 mm / 3.3x1.7x1.5 inch Type : Airborne wireless transceiver flash Number of channels: 5 Group: 3 groups (7 combinations mode) Wireless carrier frequency: FSK2.4GHZ Antenna: Built-in PCB antenna Transmission distance: 150 meters (open area) Theoretical continuous trigger frequency: >20 frames/second Normal flash sync speed: 1/320 second Battery specifications: 2x AAA (2.4V~3.2V) (Not Included) Shutter interface: Ø2.5mm Video light interface: Ø 3.5mm Flash port voltage: 3.3V (transmitter), 30V (receiver) Minimum response time: 400us Battery standby time: transmitter: 1000 days, receiver: 200 hours Package Includes: 1x Flash Trigger Transmitter 1x Flash Trigger Receiver 1x PC Sync Cable & Adapter