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
