ØSupports USB Firmware Upgrade
YN680EX-RT is equipped with USB port. Please visit YONGNUO official website to download the upgrade firmware and update the flash to ensure the best compatibility and performance of the flash.
ØSupports Wireless Master Function
The YN560 IV can be used as master unit, provides 3 independent groups with controlling ability, realizing remote control the flash mode, flash output and focal length of the YN560 IV and YN560 III.
ØSupports Wireless Slave Function, fully supports YN560-TX、RF-603（I/II）、RF-602 Wireless transmitter
One YN560 IV can respectively receive the wireless signal from YN560 IV、YN560-TX、RF-603 (I/II)、RF-602,with optional 16 channels; when the YN560 IV and YN560-TX used as transmitter, it can realize remote control the parameter settings.
ØMultiple Trigger Synchronous Mode Supported
The YN560 IV can triggered through the set top of the camera, 2.4G wireless triggering, S1 and S2 pre flash cancel mode.
ØSettings Save Automatically, Supports Custom Settings (Fn)
The parameters on the flash will automatically save when the flash turned off; the users can customize setting the flash function as needed.
ØGN58 @ ISO100，105mm
High Guide Number 2.4G wireless speedlite, supports M/Multi/-- mode.
ØSound Prompting System
When the sound prompting system is enabled, the different sound ways will prompt different operating state of the flash so as to allow you focus on shooting.
ØSupport Electric Zooming Function
The flash coverage can be altered between 24~105mm through the [ZOOM] button.
ØUltrafast Charging Recycle System, Supports External Power Supply
ØEquipped with Big Size LCD Display Screen, Standard PC Synchronous Interface