System flash Yongnuo YN-560 IV Negative Display   YN-560 IV flash is a combination of YN-560 and III YN560-TX. It has a built-in control system, so you can use it not only as a flash speedlite, but also as a master flash. With this flash, setting multiple flashes becomes fast and, most importantly, easy. You can do all the settings you want directly on the YN-560 IV and you're ready to start flashing. Features: The YN560 IV can be used as a master unit.There are 3 groups available for this purpose, so complex lighting scenarios are no problem. Of course, the zoom function can also be controlled individually for each group. Supports wireless slave function, supports YN560-TX Canon or Nikon, RF-603 (I / II), RF-602 Save setting automatically, supports user-defined settings (Fn) The parameters on the flash can be saved automatically. The user can adjust the setting according to his preference. The different modes of the flash: The Yongnuo Speedlite YN-560 IV offers three modes to help photographers shape the light of their shots. M (Manual) is the mode that fires the flash when plugged into a camera or remote trigger with center contact.S1 (Slave 1) is the mode in which the flash cooperates in a traditional single-flash system.S2 (Slave 2) is the mode in which the flash ignores the pre-flash of a TTL system and fires only with the main flash. Multi mode the number and frequency is adjustable (strobe mode). A Yongnuo battery pack (SF-17/SF-18) can be used with it as an option. Compatible with: All DSLR cameras with standard hot-shoe ( e.g. Nikon, Canon, Pentax, Olympus, etc.). Technical Details: Compatible with Yongnuo RF-602, RF-603 flash triggers.Size 7,2 x13,5 x 8,5 cmWeight approx. 250gVertically adjustable from 0-90°/ horizontally rotatable from 0-270Flash guide number 58 (at 150mm)PC-Sync socketFlash modes: M, S1, S2, MultiFlash duration: 1/800- 1/20000 secondsFlash output control: 8-step 1/1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/1284x AA batteries (alkaline or Ni-MH) we recommend using Rechargeable batteriesRecharge time: approx. 3 seconds (depending on battery and power)Standby modeConnector for battery pack   Scope of delivery: 1 x flash unit1 x protective bag1 x mini stand1 x user manual (english)