Neewer CellsII-N High Sync Speed Wireless Flash Strobe Trigger Transmitter Receiver for Nikon DSLR Series,Witstro Series,Godox V850 V860,Neewer TT850 TT860 Single transceiver design, could be used as either a transmitter or a receiver. Could be used as a wireless trigger of studio flash, speedlite and also a wired or wireless camera shutter release (Normal Shooting & Long Exposure Shooting). Super high sync speed up to1/8000s, meets the need of high sync photography. 16 non-interfering optional channels enable you to control multiple flashes synchronously. Applies to Nikon DSLR Series,Witstro series, Godox V850 V860 etc.