Features: -With 433MHZ wireless transmission RT transmitter and 16 channels to triggering-1/300s-1/2000s flash duration clear and vivid images-3 flash modes: M S1 and S2 for improved versatility and usability.-8 variable flash output from 1/128 to full meeting your flashlight demands.-Multiple auto-self protections for power saving and against overheating.-Added with sync socket and a quick charge port for external power pack.-Integrated reflection board giving a highlighted point on the eyes-Build-in wide panel diffuser creating soft and natural illumination Technical Date:Model: TT560IIGuide number: 38(m ISO 100)Flash mode: M S1 S2Vertical rotation angle: 0-90 degreesHorizontal rotation angle: 0-270 degreesPower: 4Xaa Batteries (Alkaline or Ni-MH are usable)Lighting times: 100-150 times (AA alkaline batteries used)Recycle time: approx. 0.1-5s (AA alkaline batteries used)Color temperature: 5600±200KWireless frequency: 433MHzChannel: 16Workable distance: 15mFlash duration: 1/300s-1/20000sDimensions: 190x75x55mmNet weight: 310g Compatible with:All DSLR cameras with standard hot shoe such as Nikon Canon Pentax Olympus etc. But except for Sony and Minolta because they use different hot shoe