This product is a bluetooth remote control self-timer using for mobile phones without installing any software. It can be used for iPod touch / iPhone / iPad / GALAXY S2 / S3 / S4 / S5 GALAXY Note2 / Note3 / HTC-G14 / Rezound / G22 and other brands of some android system mobile phones. As part of pre-installed camera software in the Android phone do not have the function of shutter. So self-timer cannot be used. Therefore you need to install the Android camera software please go to the following address to download camera software (Camera.apk):www ipega com cn Automatic recognition phone system once connected you can use Can long distances for use up to 10 meters without any obstructions IOS system just compatible above 5.0 versions Use button battery: normal use can last for up to 6 months Support camera mode (requires manual switching)