... ---Samsung GX-20 / GX-10 Specification:New Upgraded WIRELESS timer shutter release, you can not only use it at ... shutter release, but also can use it as wireless shutter release, so there are two functions ... the illuminator will reduce battery life.Operating FrequencyFSK 2.4 GHZ,it is suitable to use this ... in English and Chinese YONGNUO Digital Camera Wireless Timer Remote 2.4GHz MC-36R for Canon XS XSi ...