Dusk — the world's first electrochromic smart sunglasses – Ampere
Fast dark. Fast clear: modern self-tinting lenses
Amazon.com: BLUPOND Set of 2 Anti-Glare HD Lens Clear Vision Sunglasses - Daytime Polarized Copper and Yellow Tint Night Driving Glasses with CAR CLIP HOLDER - KNIGHT VISOR (1 CopperLens 1 YellowLens) : Automotive