It is liquid crystal protection glass for iPhone 7/7 Plus. AG (anti glare) processing that suppresses reflection of light such as sunlight and lighting is done. Improve visibility and reduce eye strain. It is a popular protective glass for gamers as it felt smooth and finger slips become better as well.
It made with a 0.33mm tempered Japan glass . With the 9H hardness, it can prevent scratches. Also the liquid crystal remains high definition of the iPhone screen.