YN585EX), supports 4 channels, realize wireless TTL, manual flash and stroboscopic flash.  
--Supports for Canon and for Nikon optical transmission wireless slave flash
One YN600EX-RT II can respectively receive the wireless signal of master unit YN600EX-RT II、YN568EX II、600EX(II)-RT、580EX II、SB-910/ 900/ 800/ 700, for Nikon built-in flash C command and for Canon 7D/60D/600D cameras built-in flash wireless signal, realize wireless TTL, manual flash and stroboscopic flash.
--GN60 @ISO100, 200mm
YN600EX-RT II as professional creative high guide number speedlite, supports TTL、 M、 Multi flash.
--Supports high-speed sync
The YN600EX-RT II can realize TTL, manual flash, the highest shutter synchronous speed is up to 1/8000s.
--Ultrafast charging recycle system, supports external power supply
It just takes 2 seconds at full output. Even if not use the brand new batteries, it just takes 3~4 seconds ultra-fast time to recycle; Besides, you can also use the external power supply to meet your higher requirement.
--Support firmware upgrade
The YN600EX-RT II equipped with USB interface, supporting firmware upgrade, you can download the upgrade firmware through the  official website to upgrade the flash.
--Support auto and manual zooming
Support auto and manual zooming, the flash coverage can be changed between AUTO, 20~200mm.
--Multiple trigger mode supported
The YN600EX-RT II can be triggered by the camera set-top, PC synchronous trigger, wireless optical/ radio remote trigger.
--Settings save automatically, support custom settings (Fn)
--Equipped with big size LCD display screen, standard PC synchronous interface

Package List:
1 * Speedlite
1 * Mini Stand
1 * Protecting Bag
1 * User Manual (English & Chinese)

Note:
Batteries are not included.