Bose Frames - Audio Sunglasses with Open Ear Headphones, Black, with Bluetooth ConnectivitySunglasses with built in Bose speakers that produce rich, immersive sound for you, while others hear practically nothing. Blocks up to 99% of UVA UVB rays Open ear audio allows you to stay aware of your surroundings, while enjoying your music Bose frames Alto feature a classic angular shape and commanding lenses. Lens Width: 52 mm, Bridge Width: 18 mm, Temple Length: 162 mm Integrated microphone for clear calls and access to your phones virtual