Overview: This Bluetooth headset & sunglasses is a perfect combination of practicability and fashion. It can make you enjoy the freedom of wireless listening and hands-free talk. Bluetooth Opertaion: 1. Bluetooth and mobile phone connection state, in the connection state without the use of listenting to music and calla can use the camera,according to a key for the camera. 2. Long press the middle button for about 8-10 seconds until the red light alternate with the blue light, this means the bluetooth is in the paring status. 3. Turn on your device Bluetooth, find the glasses”KL-300″ device and connect it , the paring is successful when the 2 light stops flashing. 4. After these steps, you can listen music and answer phone or listening. Answer a call: When a call is in, short press the Bluetooth button to answer a call, long press to refuse. Specification: 1. Bluetooth Version: Bluetooth 4.0 compatible 2. Frequency: 2.4 Ghz~2.480 Mhz 3. Transmission maximum range: 10 meters 4. Continuous talking time: 15 hours 5. Audio code: 15 bit resolution: S/N more than 60 db 6. Standby time: 100 days 7. Operation Temperature:-10-55 Celsius 8. Built-in 150mAh battery 9. Net weight: 41g Package Contents: * 1 X E-More Bluetooth Sunglasses * 1 X Sunglasses Bags * 1 X USB Cable * 1 X User Manual Welcome to our store, may you have a pleasant shopping experience! Our products have been well tested, examined and packaged before sending off. Any problem please feel free to contact us first so that we can supply the best service for you.