Feature<br> Bluetooth version 4.2 with long distance transmission also provides you clear sound to music and phone calls. Stylish design with foldable sunglasses and adjustable headset<br> Polarized sunglasses lenses eliminate glare and protect your eyes from sunlight harm.<br> Features High quality stereo and enhanced voice clarity<br><br> Specification<br> Bluetooth version: V4.0<br> Max transmission Range: 10m/33ft<br> Talking time: 6 hours<br> Recharging time: 2 hours<br> Product weight: 52g/1.8oz<br><br> Package contents<br> 1 x Sunglasses headset<br> 1 x USB extension cable<br> 1 x Glasses case<br> 1 x Cleaning Cloth<br> 1 x User manual