Ikey Quick and Smart Button Dustproof Plug for Android Smartphone 3.5mm Jack&tablet Pc 3.5mm Headphone Headset Dust Plug (Silver) adds a button to your smartphone which you can be fully customized Over 50 quick functions, like: Take photo, open apps, turn on flashlight, location, SOS, recording, accelerate, phone and etc Just Press and directly open an app in a convenient and fast way on the locked screen. For Android OS devices like smartphone, tablet pc(Compatible android 2.3 above smart phones at the moment) Just plug into the 3.5mm earphone jack, set your own shortcuts in a second Size: 15.5 x 5mm