YONGNUO YN-622N 1 x TX + 2 x RX i-TTL LCD wireless flash controller wireless flash trigger transceiver DSLR for Nikon D70, D70S, D80, D90, D200, D300S, D600, D700, D800, D3000, D3100, D3200, D5000, D5100, D5200, D5300, D7000, D7100 LCD screen display, multi-buttons quick operation,The firmware can be upgraded through the USB interface Support wireless shutter release function,The focal length(zoom)of the A/B/C three groups of flash can be adjusted separately Grouping flash mode: i-TTL/Manual flash/Super sync Supporting mixed use of the A/B/C three groups of flashes with i-TTL, Manual flash, or Super sync flash mode Shutter Sync: first curtain sync, second curtain sync and FP high-speed sync, the highest sync speed is 1/8000s