Car Mobile Phone Remote Control Bluetooth Wireless Multimedia Button Remote Control Music Playback Selfie, Colour: Silver 1. Material: ABS 2. Power supply: contains 3 button batteries 3. Bluetooth version: 4.0 4. Scope of application: Bluetooth headset, computer, mobile phone, car navigation, etc. 5. Effective distance: about 10m 6. Applicable scenarios: cars, motorcycles, bicycles, etc. 7. Power supply: with CR2025 button battery 8. Compatibility: IOS 7.0Android 4.4+ 9. Size: about 3.6x0.8 cm 10. Weight: about 22 grams Features: 1. Connect to mobile phones or tablets via Bluetooth, no additional software installation is required 2. Press the volume button to remotely control the camera shutter, making selfies more natural 3. Bluetooth effective control range is about 10 meters 4. If the button is not operated for 30 seconds, the connection will be disconnected and enter the sleep mode. At this time, press any button to wake up and automatically reconnect 5. With soft light backlight, it is convenient to use when the light is dark 6. Incoming call voice report number reminder, hands-free call, convenient and fast