B01MZHVV54 YONGNUO Updated YN600EX-RT II Wireless Flash Speedlite with Optical Master and TTL HSS for Canon AS Canon 600EX-RT w/EACHSHOT Diffuser

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Updated version from YN600EX-RT.
Multiple Trigger Mode Supported.The YN600EX-RT II can be triggered by the camera set-top, PC synchronous trigger, wireless optical/radio remote trigger.
Ultrafast Charging Recycle System, Supports External Power Supply. It just take 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.
Supports Firmware Upgrade. The YN600EX-RT II equipped with USB interface, supports firmware upgrade, you can download the upgrade firmware through the Yongnuo official website to upgrade the flash.
Settings Save Automatically, Supports Custom Settings (Fn)