51 mm / 16 mm / 155 mm (Lens width / Distance between lenses / Temple length) With its classic angular shape and commanding lenses, Bose Frames Alto remixes the most iconic sunglasses silhouette in patented acoustic chambers to the premium lenses, Bose Frames are designed for sun and sound. Explore the features to see how it all comes together. Its a new way to listen. One that leaves you fr world around you, all while discreetly listening to music. Choose the look that best fits you with the Bose Frames Lens Collection. Featuring a selection of limited-edition colours, these replacemen for a look thats all your own.