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 Yongnuo 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 interfaceDriver & Software: http://yongnuo.com.cn/app/YNFlash-Updater-Install_V1.30.zip Firmware: http://yongnuo.com.cn/app/yn600ii_offical_fm_V1.13.zip Package List: 1 * Speedlite 1 * Mini Stand 1 * Protecting Bag 1 * User Manual (English & Chinese) Note:Batteries are not included.