With the Bose Frames Alto Audio Sunglasses, Bose provides functional fashion that combines a personal audio experience with modern shades. As a pair of sunglasses, the Frames Alto give you a black frame with black tinted, non-polarized lenses that provide UVA/UVB protection. The Frames Alto are designed with a classic angular shape and smaller frame than the larger-sized Frames Alto. Like their counterpart, the Alto features comfortable nylon rims, durable metal hinges, and shatter/scratch-resistant lenses.Bose Frames Alto Bluetooth Audio Sunglasses are the first smart sunglasses from Bose. Enhanced with Bose sound and embedded with miniaturized electronics in the temples, these sunglasses allow you to discreetly listen to rich, immersive music while others hear practically nothing. It’s a revolutionary, personal open ear audio experience. Enriched with premium accents and materials, like gold-plated hinges, Alto offers a classic angular look and is available in S/M or M/L size. And Bose Frames Alto blocks up to 99% of UVA/UVB rays with uniformly tinted lenses. Bose Frames include a seamlessly integrated microphone for taking calls and accessing Siri or your Google Assistant. And they make connecting easy with Bluetooth. Setup is easy, too. Simply put them on. Turn them on. And the Bose Connect app walks you through the rest.