Portta PETCR-BP Bluetooth Wireless Remote Control Camera Shutter Release Self Timer for iPhone 5 Simple and Easy Wireless Set-Up.Only need one CR2032 button battery (can use six months to one year), and easy to change. Long distances for use, up to 10 meters Long distances for use, up to 10 meters Long distances for use, Long distances for use, up to 12 meters. Compatible with mobile phoneiPhone,iPad,iPod,S3,S4which requires support Bluetooth 4.0, IOS 6.0 or later. Equipment connected to the phone, easy to look for a mobile phone. Can be used as a remote controller to take photos.Small and beauty, convenient to carry on with other tiny goods to hang together.