【with bluetooth function】 stylish stereo polarised glasses with bluetooth for calling, music and bluetooth connection. bluetooth matches perfectly with sunglasses. 【bluetooth-headset function】 these glasses are not only sunglasses but also bluetooth headsets that have access to navigation, phone calls, music, etc. without pulling the phone out, which is convenient to use. 【anti-uv400 polarized lens】 these smart outdoor goggles are equipped with anti-uv400 polarized lenses, which can block ultraviolet rays to maintain a clear vision and withstand strong sunlight. 【hifi stereo quality】 these sunglasses have stereo fidelity quality, clear sound quality can listen to music and calls, comparable with personal chat. product from smartware collection