Pixel’s 3rd generation flash trigger, the Pixel King Pro brings a variety of improvements over previous models. These include:· Wireless radio flash / studio trigger kit with LCD screen· Full I-TTL / E-TTL compatibility for Nikon & Canon on hot shoe passtrough & wireless receiver· 3 Flash grouping (A,B,C) with power group adjustment & ratiooutput adjustment on the transceiver· Up to 1/8000s shutter speed HSS, 1st curtain sync & rear curtain sync(Depends on camera & Flash capability)· Supports power zoom adjustment (auto/ manual) & exposure lock· User friendly design, very intuitive to use· Multi-key design, each function has its own buttons· Both the transceiver & receiver each run on 2 x AA batteries (notincluded).· Metal internal construction for more rigidity & durability· Firmware upgradableSpecification:· 2.4 GHz High-speed 2-ways communication system· 300m operating range· 15 fixed channel, 1 automatic channel. Kit contains:1x transceiver, 1 x USB cable, 1x receiver, 1 x carry/storage bag