Generic Smart Bluetooth Sunglasses - Black

Hands free phone call stereo music smart voice control color: black polarized lenses dimension: 155mm x 155mm x 43mm this product is very popular, not just because of the incredible price, but also because it is so easy to use.there are two kind of sound transmission: one is air conduction sound “to listen via ears”, which is transmitted sound through air vibration; one is bone-conduction sound “directly” transmitting sound vibration, which is transmitted sound through bone vibration namely, sound is transmitted through “air vibration” and “bone conduction, skin tissue vibration”. sound with bone-conduction technology, there are many advantage build in bluetooth 4.0 ,mic and edr, you can answering your phone after connecting with your phone.also we build-in dsp smart noise reduction,better talking effects. changeable lens,flexible design,when you want to try something else,you can buy myopia lens in the local eyeglasses stores.that's easy!