Yongnuo Yn600ex-rt 2.4g Wireless HSS Flash with Yn-e3-rt Radio Transmitter Set Light for Canon 1dx 1ds III 1d 5diii 5dii 6d 7d 70d 60d 50d 40d 700d/t5i 650d/t4i 600d/t3i 550d/t2i 500d/t1i 450d/xsi 1100d 1000d Dslr Camera Lamp Illumination Circuit design Insulated Gate Bipolar Transistor (IGBT) Guide No. 60 meters (ISO 100, 200mm) Flash mode HSS, TTLMMULTI, GR Trigger Mode Set-top, wireless master mode, wireless slave mode, Sc, Sn, S1, S2, optical slave mode Wireless triggering distance 20~25m indoor, 10~15m outdoor Zoom range 20, 24, 28, 35, 50, 70, 80, 105, 135, 200mm Vertical rotation angle -7~90 degrees Horizontal rotation angle 0~360 degrees Power supply 4AAsize batteries (Alkaline or Ni-MH are usable) Lighting times 100~1500 times (AA alkaline cell used) Recycle time approx 3s (AA alkaline cell used) Color temperature 5600k Flash time 1/200s~1/20000s Flash control 8 levels of output control (1/128~1/1), 29 levels of fine tuning External interface hot shoe, PC port Additional features Master flash, High-Speed sync, Second-curtain sync, FEC, FEB, FEV, manual zoom, auto zoom, sound prompt, advanced setting, automatically saving setting, PC port, power saving mode and over heat protection Dimensions 6278214mm (Extended state) Net weight 430g