YONGNUO YN-622N-TX i-TTL Wireless Flash Controller Transmitter for NIKON N1 N3

YONGNUO YN-622N-TX i-TTL Wireless Flash Controller Transmitter for NIKON N1 N3

Compatible Camera List
Nikon: D70, D70S, D80, D90, D200, D300S, D600, D700, D800, D3000, D3100, D3200, D5000, D5100, D5200, D5300, D7000, D7100
Compatible i-TTL Flash List
Yongnuo: YN-465N, YN-467N, YN-468II, YN-565N, YN-568N
Nikon: SB-400, SB-600, SB-700, SB-800, SB-900, SB-910

Features:
3 Groups
Mix TTL, Remote Manual, and SuperSync Groups
Individual 1/3rd stop Manual Power and FEC adjustment
Remote Flash Zoom in 3 groups, and Auto Zoom
2nd Curtain Sync, HSS, SuperSync
USB port for Firmware Updates
AF Assist Light
Remote Shutter Release Function
Dedicated Buttons for Fast Adjustments
Battery Level Indicator
PC Sync Port
7 Channels
Improved Stability and Transmission Speed
SuperSync Manual Timing Adjustment by Group
Flash Value Lock function (FVL)
Modeling Flash & Red-Eye Reduction flash
Settings Saved Automatically
PC Port Input
Up To 100M Range Basic Trigger Mode for Non Nikon Cameras (with standard hotshoe, max sync speed is 1/250s)

The ability to mix TTL and Manual groups is a major advancement, and puts the YN-622-TX up there with the Phottix Odin and Pixel King Pro for functionality.
Improved stability and transmission speed is another upgrade, and should also help with the Nikon SB-800 flash, which has had some issues with the YN-622N previously due to its slower processing speeds than later Nikon flashes.
SuperSync Manual Timing Adjustment by Group is another significant new feature, allowing different studio lights to be used together at sync speeds above the camera X-sync.

The YN-622N-TX includes both N1 and N3 shutter release cables
    1 x LS-2.5/N1 Shutter Connecting Cable
    1 x LS-2.5/N3 Shutter Connecting Cable