product details Perfect combination of durable and fashion 2.Polarized lenses, offers anti-glare and ultraviolet protection 3.Auto switch to phone talking mode when making and receiving calls 4.With Previous/Next Song control, Volume Up/Down control 5.Bluetooth V4.0, support both headset and hands-free profiles 6.Built-in rechargeable lithium battery, comes with Mini USB cable 7.Not only can answer the call, but also used to listen music.Wireless Technology: BluetoothBlack Polarized lenses which can filter light and protect your eyesightFashionable design with foldable eyeglasses.Earphones built directly on to the frame,