Music Shield is a pair of tint-adjustable sports glasses with built-in audio, designed for cutting-edge performance and maximum focus during any workout. With a lightweight build, discreet speakers for music and calls, and our patented electronic tint-adj

Details Music Shield is a pair of tint-adjustable sports glasses with built-in audio, designed for cutting-edge performance and maximum focus during any workout. With a lightweight build, discreet speakers for music and calls, and our patented electronic tint-adjustable lenses, they ensure no lapse in vision as lighting conditions change. The tint shifts in less than 0.1 seconds-1,800x faster than photochromic glasses-using the built-in touch slider controls, and can also be manually adjusted with a simple slide.