High performance high compatibility high-power flash output. TR series adds an external power outlet quick call back to obtain a rapid rate only 2.9 seconds recycle time do not apply the new battery can also call back to obtain a rapid rate only 4-5 seconds; Supports high-speed continuous shooting :1/16 and below the brightness TR series to support high-speed continuous shooting 12SEPS; Power-saving mode:when the flash without any action on the backlight turned off after 20 seconds60 seconds when the flash does not work CPU automatically goes to sleep does not work more than 30 minutes CPU will automatically shut down. Overheat protection :Built-temperature detection (thermal protection); Built-in 2.4G ultra-long-distance wireless flash systemGlobal Free application for digital FSK 2.4GHz & Ultra-long-distance wireless transmission modulecommunication distance up to 50 meters. The speedlite could be the Master unit (remote control slave flash mode and parameters) or Slave unit (accept the flash from the main control unit and to achieve the desired flash)support for 10 channelsthree different groups to achieve multi-lamp creative cloth light system. Rear-curtain Sync(Only support for the Nikon Version applicable with the Rear-curtain sync); Support red-eye reducing flash mode; Suit for: Compatible with the ISO hot shoe digital SLR cameras / Radio Triggers. Nikon D3X / D3 / D2Xs / D2X / D2Hs / D2H / D1X / D1H / D1 D700 D300s D300 D200 D100 D7100 D7000 D5100 D5000 D5100 D3000 D90 D80 D70s D70 D60 D40X D40; Canon EOS 5D Mark II 1Ds Mark [ IV / III / II / I ] 1D Mark [ III / II N/ II / I] 7D 5D 50D 40D 30D 20D 10D 3 1V 500D 550D 600D 650D 1000D 1100D 450D 400D 350D 300D; Pentax K7 / K20D / K10D / K200D / K100D / K110D / *ist DS / DS2 / DS / DL2 / DL / D; Olympus E5 E3 E30 E300 E620 E520 E420 E450 E-P2 E-PL2 E-PL1 D; Panasonic G10GK GH2GK GH1GK G2GK G1GK GF2GK GF1GK; Other universal hot shoe camera bodies