1. This product is a self-timer used in the phone's Bluetooth remote control without having to install any software to use for IPOD / IPHONE / IPAD Samsung i9220 / i9250 / i9300 / i9500 / i9190 / note2 / note3 and some other Android 4.1 more systematic brand mobile phones. Other Android phones can not be directly manipulated you can download camera360 software then open camera settings in camera360 set the volume keys as picture taking key. 2. Contains CR2032 button battery can take pictures up to more than 3000 pieces. 3. Can selfie in distance up to 20 meters away without obstacles 4. With five function keys: switch Bluetooth pairing camera Android configuration IOS configuration. 5. Specification: Bluetooth Version 3.0 6. Transmit frequency: 2.4GHz~2.4835GHz 7. Monopod weight is only 130g 1m (retracted: 22cm); Portable to carry lightweight and flexible. 8. Suitable for cameras w/ standard tripod mounting holes specially suitable for high and low level shooting; Can bear common DSLR cameras; Mobile phone clip: 55~85mm (3.5~5.8 inch phone). 9. Tripod weight is 33g shortened is14.6cm elongation is 19.5cm.