Functions :
Experience high-quality sound — without headphones. That’s the magic of Bose Frames Tempo: high-performance sport sunglasses with a revolutionary Bose Open Ear Audio™ design that allows you to hear your music and your surroundings at the same time for a workout unlike any other. With a sweat- and weather-resistant design, a lightweight, aerodynamic nylon frame, and soft, silicone nose pads, Tempo is designed for comfort and performance. It’s the sound you expect from Bose with everything you need from sport sunglasses. Two specially designed Bose speakers. Lightweight, aerodynamic nylon frame. Soft, silicone nose pads (3 options in box). Polycarbonate Mirrored Black polarized lenses (12% VLT | 99% UVA/B). Advanced dual-microphone array for calls. Comfortable.And secure- They wouldn’t be performance sunglasses if they didn’t stay put. That’s why we precision engineered Bose Frames Tempo to feel like they’re a part of you, from the soft, silicone nose pads to the flexible temple grips to the custom spring hinges that hold just tight enough to stay secure and just light enough to stay forgotten. Because on the 15th kilometer, all you should feel is your runner’s high, not your sunglasses. On the path to perfection, you face it all. Your sunglasses do, too. That’s why these IPX4 water-resistant sport sunglasses were designed to survive the elements. The polycarbonate polarized lenses are scratch- and shatter-resistant. The TR-90 nylon frame is rugged and durable. And a specially designed acoustic mesh in the ports helps keep out water and debris.