With this pocket-sized bluetooth shutter, you will never miss any moment for group photos and selves as well. It makes everything much easy and it also means that you can fix the phone with a stand or tripod instead of holding it all the way. Specification: Communication: Bluetooth Version 3.0 Transmit frequency: 2.4GHz-2.4835GHz Communication distance: 10M(30ft) Battery life: CR2032*1 cell/about 6 months life uder working in 10 times a day Dimension: 48*30*10mm Weight: about 8g Battery: Positive pole upwards to install the battery. How to use? 1. Paring 1).Turn on the shutter by switching the ON/OFF button, the shutter will enter into paring mode and indicator LED starts flash quickly at the same time. 2). Activate the Bluetooth function on your phone and sourcing the device around. 3). Select the device of "Shutter" from the list and paring will be finished automatically in few seconds. 2. Select APP Use inbuilt camera APP to taking the photos via "Shutter" or you can download the APP "Camera 360" from APP Store if inbuilt camera cannot be supported, check the compatible device and APP in following instruction. 3. Shooting Select a correct APP and press the proper button on the shutter for iOS and Android phones to taking the photos. Compatible devices Compatible with Android 4.2.2 OS or latest and iOS 6.0 or latest Inbuilt Camera APP support iOS device: iPhone 5S/5C/5, iPhone 4S/4, iPad 3/2, iPad mini, iPad with Retina, iPod touch 4th or latest. Inbuilt Camera APK support Android device: Samsung Galaxy S2/S3/S4+, Note 1/2/3+, Tab 2, Note 8, 10.1+, Moto X/Nexus 4/5/7+ Camera 360 APP/APK support: iOS, Android