Yongnuo YN600EX-RT II

The YONGNUO speedlite transmitter YN-E3-RT II is a transmitter for wireless flash shooting. It can control up to 5 groups(15 units) of speedlites that have a wireless multiple flash shooting function using ratio transmission. Flash Modes: ETTL/M/Multi/GR4/ flash modes. supports 1st curtain, 2nd curtain(Only in M mode), high speed sync. New design... moreed select dial and display interface for easier operation, supports remote control to set the focal length(ZOOM) of the slave flash. Firmware can be updated via USB(Micro USB), Built-in AF asist beam emitter, transmission range is 100m. Two-way 2.4G radio communication, fully compatible for ST-E3-RT/600EX-RT/YN-E3-RT/YN968EX-RT/YN600EX-RT(II)/YN686EX-RT/YNE3-RX.

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... more~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)