Also with me was the SYK-5 trigger an older multiple flashes. Among other a Vivitar 283. As described elsewhere, the flash fires only once, off and on again turned to fire again. Three further flashes of different makes not walked. Conclusion: USELESS Although one really needs no description, a Chinese-English translation of the package back here: [linked page not allowed]. Therefore, look for Seagull SYK-5 English Insructions. Addendum: The sender sits in Hong Kong. A reversal is made more difficult. Among other things, through increased handling costs in the return and a longer duration. The price / performance structure of the article is greatly disturbed.