Tint adjustable sports glasses with audio. A cutting-edge design that brings maximum performance. Music Shield features a lightweight build, built-in speakers, and our patented electronic tint-adjustable lenses for no lapse in vision and ultimate focus during workout. Change tint in less than 0.1 sec (1,800x faster than photochromic glasses) using the built-in touch tint slider controls. | Chamelo | | Sport Music Shield Slider HVL | Adjustable Electrochromic Tint | Smart Audio Sunglasses | Black frame | Smoke lenses | Best Buy