Yn-568ex ii is the 2nd generation of the yn-568ex. The difference between these two generations is that the yn-568ex ii can be a master flash, while the yn-568ex can’t. In other respects, they are same. New designed YONGNUO flash speed lite yn-568ex ii is released now, it’s a flash like yn-565ex with the features, plus some huge upgrades on the new yn-568ex ii making it a much more capable tool for digital flash photography, both in the camera hot shoe and in wireless mode.Yn-568ex ii is yn568ex upgraded version. It can be used as a master flash. Functions: master mode support hiss, the high speed sync, up to 1/8000 second wireless TTL slave for canon and Nikon hot shoe TTL for canon guide number 58 (is 100, 105mm) flash modes: ETTL/I-TTL, m, multi-mode modeling light auto and manual zooming head 24 ¨c 105mm auto zoom for sensor size 2.5Mm sync port 3 seconds recycle time cons suit for: 1), hot shoe TTL mode: CANON 1DX, 1DS SERIES, 1D SERIES, 5DIII, 5DII, 5D, 7D, 60D, 50D, 40D, 30D, 20D, 700D, 650D/T4I, 600D/T3I, 550D/T2I, 500D/T1I, 450D/XSI, 400D/XTI, 350D, 100D, 1100D, 1000D 2), wireless TTL slave mode’s canon 5DIII 7D 60D 700D 650D 600D, YONGNUO ST-E2, canon 580EX II 3), master mode, it can trigger these flash: YONGNUO: YN568EX II, YN568EX, YN565EX, YN500EX, YN560EX, YN510EX canon: 600EX-RT, 580EX II, 580EX, 430EX II package including: 1 x flash speed lite YN-568EX II 1 x mini stand 1 x manual in English and Chinese 1 x original box .