LuMen Sunglasses Bluetooth Headset Headphone For for iPhone 4S 5S 5C, Galaxy S4 S3 ,All Andorid Smartphone with bluetooth function (black) The flexible design,light frame and legs,even more lighter than many Ordinary sunglasses,the arc structure was designed according to the head,willnot chuck and loose. Using high-end polaroid polarized lens,Effectively prevent ultraviolet light,You can see more clearly with this sunglasses in the sun. Using the CSR high-end chip,Can realize make and answer the Call easily Support voice navigation Conversation time:12~15 hours Standby time:more than 200 hours