YN560III is a brand new flash specially designed for professional creative photography. YN560III has some advanced applications. It has the fine tuning function of output power. It uses inbuilt flash or top-mounted flash as master flash. The flash can realize the high-speed continuous shooting function.You can do more nice adjustment to the flash output with this function. Compared with YN560II, it has many features as following:Specification:Model: Yongnuo YN560IIICircuit Design: Insulated gate bipolar transistor (IGBT)Guide Number: 58 (ISO 100, 105mm)Flash Mode: M, Multi / Slave function: S1, S2, RXZoom Range: 24, 28, 35, 50, 70, 80, 105mmVertical Rotation Angle: -7~90 degreesHorizontal Rotation Angle: 0~270 degreesPower Supply: 4×AA size batteries (Alkaline or Ni-MH are usable, batteries are not included)Lighting Times: 100~1500 times (AA Alkaline cell used)Recycle Time: Approx 3s (AA Alkaline cell Used)Color Temperature: 5600kFlash Time: 1/200s~1/20000sFlash Control: 8 Levels of output control (1/128~1/1), 29 levels of fine tuningWireless triggering distance: 100m / 328 feet (2.4G wireless); 20-25m / 65-82 feet indoor, 10-15m / 32-49 feet outdoor (Optical control)Additional Features: The electronic flash head zooming, sound indicator, automatically saving setting, PC port, power saving mode and over heat protection.Suitable for:Any cameras with the standard hot-shoe. (Such as Canon, Nikon, Olympus, Pentax etc.)For Sony Camera, the users need to buy an extra Sony hot-shoe converter.Package includes:1× Yongnuo YN560III Speedlight1× Protecting Bag1× Mini Stand1× Manual (English)