Combining function and fashion, the Bose Frames Soprano Audio Sunglasses give you an elegant pair of stylish sunglasses made from eyewear-grade nylon in a high gloss black, and integrated speakers within the stems for a private listening experience. Using Bose's Open Ear Audio design, the speakers direct audio into your ears for only you to hear. Nothing goes in, on, or over your ears. On a full charge, you can enjoy up to 5.5 hours of audio.