YONGNUO &ndash; YN685 &ndash; Speedlite for Canon DSLRs YN685 Speedlite for Canon is ongNuo's first speedlite with YN-622C compatible radio transceiver built inside. Completely Compatible with YONGNUO 622C and 603 Wireless System YN685 supports respectively receiving wireless triggering signal from YN622C, YN622C-TX, YN560IV, YN560-TX, RF605, RF603II and RF603. With HSS function YN685 can be used with every shutter speed and the maximum sync speed is up to 1/8000s. Note: The camera and transceiver should support HSS function. Flash Mode - ETTL /M / Multi,1st Curtain Sync / 2nd Curtain Sync.Recycle time: Approx 3s,Color temperature: 5600k,Flash time: 1/200s~1/20000s