YN-560 IV Flash Speedlight is a combination of YN-560 III and YN560-TX it has built-in wireless trigger system, so you can not only use it as flash speed lite, but also a flash controller Transmitter. Specification: Circuit design: Insulated Gate Bipolar Transistor (IGBT)Guide No. 58 meters (ISO 100, 105mm)Flash mode: M, Multi Triggering Mode: Camera set-up, TX, TX, S1, S2 Zoom range: 24, 28, 35, 50, 70, 80, 105mmVertical rotation angle: -7~90 degrees Horizontal rotation angle: 0~270 degrees Power supply: 4×AAsize 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~1/20000sFlash control: 8 levels of output control (1/128~1/1), 29 levels of fine tuning External interface: hot shoe, PC port and eternal charging port Wireless triggering distance100(2. 4g wireless); 20-25m indoor, 10-15m out door (optical control)Additional features: The electronic flash head zooming, sound prompt, automatically saving setting, power saving mode, overheating protection and advanced options. Suit for: ALL Canon Nikon Pentax Olympus DSLR CameraYongnuo RF-605, RF-603 II, RF-602, YN-622C, YN-622N, YN560-TXYongnuo YN-560 IIIYongnuo Flash Battery Pack SF-17 C / SF-18 Package Including: 1 x YN-560 IV Flash Speedlite1 x Protecting bag1 x Original box1 x Manual in Chinese and English
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YN560 IV=YN560III+YN560-TX, Supports Wireless Master Function.
Supports Wireless Slave Function, fully supports YN560-TX, RF-603 II RF-602 Wireless Transmitter.
Supports Multiple Trigger Synchronous Mode. Endure the battery is fully changed.
Supports setting save automatically, custom settings ( fan ). Verify the flash light setting
Supports ultra-fast charging recycle system, external power supply. Check the remote control settings before use