1. Release your hands, remotely control and capture moments, and keep the beauty 2. Support mobile phone camera and third-party APP shooting 3. One-button switch, no need to long press to turn on Bluetooth 4. Automatically remember the link when booting, which is more convenient 5. Operating system: compatible with Android or higher and IOS 6.0 or higher 6. Communication: Bluetooth 3.0 version 7. Transmitting frequency: 2.4GHz-2.4835GHz 8. Communication distance: 10m (30ft) 9. Battery life: CR2032x1 battery/approximately 6 months after working 20 times a day 10. Size: 4.5x2.5x1cm 11. Weight: 20g

http://olla.gr/wireless-bluetooth-one-button-selfie/