Podofo Wireless Bluetooth Music Sunglasses with Stereo Headset Mic for Smartphone Iphone Android Tablet with Bluetooth 4.1 + Free Carrying Case and Wipe Cloth 1. It was made of polaroid polarized lens which effectively prevent from harmful UV. 2. Answer phone and enjoy music anytime after easy pairing your phone with the sunglasses. 3. Enjoy great quality communication and music due to the stereo headphone. 4. Up to 10 miles working distance, 15 hours call time and 100 days standby time. 5. Compatible with most smart phones/ tablets because of complied with the Bluetooth protocol 4.1.