Main Features: Support both headset and hands-free profiles, calling voice and Reporting phone number function when calls coming • Bluetooth 4.1 Music sunglasses ,can listen music,Bluetooth 4.1, • Support iPhone iPad iPod Samsung HTC Sony Smart Phone PC Tablet • Auto switch to phone talking mode when making and receiving calls, Support Mp3 can listen music,With Previous/Next Song control, Volume Up/Down control • Made of polarized lenses , it has the function of anti-rays, no glare and good eye health care. Hi-Fi earphones built directly on to the frame, and can be adjusted 270 degree for comfortable fit. Technical Parameters: 1: Operating frequency 2.4GHZ-2.480MHZ 2: The standard of Bluetooth V4.1 4: Support English voice: Calling voice and Reporting phone number function when calls coming. 5: Transmission range:10 meters 6: Transmit power: Glass 2 7: Support Headset, Hands-free 8: Built-in rechargeable lithium battery 180mAH 9: Talk time: 4-6 hours 10: Plays music : 8 hours (Actual test time). 11. Standby time: 150 hours 12: the weight is only 35g, it is suitable for long time wear.