Features: Compatible flash mode: i-TTL, manual flash, Compatible Shutter sync: Front-curtain sync, rear-curtain sync and high-speed sync (HSS/ FP), the highest sync speed is 1/ 8000s. Support FEC, FVL function , Support modeling flash and red-eye reduction flash, Support flash zooming (auto) , Built-in AF assist beam emitter (AF Lamp) , Settings saved automatically , Compatible with Yongnuo/Nikon series flashes. Support PC port triggering strobe flashes . Specifications: System Type: Digital FSK 2.4GHz wireless transceiver, Distance: 100m , Channel: 7 , Flash Mode: i-TTL manual flash, SYNC Mode: Front-curtain sync, rear-curtain sync, hi-speed sync (Auto FP), Group Control: 3Groups (A/ B/ C) , Sync Speed: 1/ 8000s , Input: Hot Shoe , Output: Hot shoe, PC port, Compatible type of flash: Hot-shoe flash, Strobe flash , Battery: AAx2 (support 1.2V rechargeable battery) , Standby Time: 60h , Dimension: 89.5 x 53 x 39mm , Weight: Approx. 220g , 100% Brand New . Suitable for: Compatible camera list: Nikon: D70 D70S D80 D90 D200 D300 D300S D600 D700 D800 D3000 series/D5000 series/D7000 series Compatible i-TTL flash list: Yongnuo: YN465N YN467N YN-468N(II) YN565N YN568N. Nikon: SB-400 SB-600 SB-700 SB-800 SB-900 SB-910 . Package Includes: 1 x Transceivers , 1 X English Manual, 1 X Original Packing.