Fomito Godox X1-N TTL 2.4GHz Wireless Radio Flash Trigger X System for Nikon D810 D800E D7200 D5500 D5100 Cameras, SB910 SB900 SB700 Flashes Built-in 2.4G Wireless Transmission for Nikon DSLRs. Support for I-TTL autoflash, 1/8000th High-speed sync. Wireless Remote Control and Grouping System( max. 4 groups & 32 channels). 3 fcuntion: Wireless Speedlite Trigger, Wireless Studio Flash Trigger, Wireless Shutter Release. Compatible with i-TTL autoflash, Support all cameras that have PC sync socket