YN560 IV Universal 2.4G Wireless Speedlite Flash On-camera Master Slave Speedlight GN58 High Speed Recycling Replacement for Canon Nikon Sony DSLR Camera

Master & Slave Wireless FlashAs a master unit, YN560 IV provides 3 independent groups with controlling ability, Multiple Trigger Mode SupportedGN58 at ISO100, 105mm High guide number 2.4G wireless flash, supports M/Multi mode, can be triggered by the camera set-top, 2.4G wireless trigger. S1 and S2 light are sensitive trigger, S2 with pre-flash-canceled mode., Electric Zooming & High Speed RecyclingThe flash focal length can be altered between 24-105mm by pressing [ZOOM] button; Ultrafast Charging Recycle System for better using experience., Sound Prompt FunctionWhen the sound prompt system is enabled, different sound modes will prompt different working conditions of the speedlite so as to allow you to focus on shooting process (Note: the sound can be turned off)., Other Practical and Powerful FunctionsWith charging socket for external power pack, meeting your higher demand for charging recycle; The parameters on the flash will automatically save when the flash turned off