Flash Bounce Diffuser Soft Cover for YONGNUO YN560 YN560 II YN560 III YN560 IV. In the optical transmission flash shooting, the YN600EX-RT II can be used as master unit to trigger the YONGNUO and Canon EX series flash (excluding the YN585EX),supports 4 channels, realize wireless TTL, manual flash and stroboscopic flash.
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