The Sacuba R series Eyewear is a revolutionary self-clean sunglasses. It has a new feature that allow the sunglasses to clean its lens by itself without needing to use cleaning cloth. It can clean off any smudge on lens such as dust, sweat, oil, fog, raindrop and water splash. This is particular useful if you are playing outdoor activities and sports. So you can enjoy hazzle free activites without having to worry for lenses getting dirty.