Combo pack MYBAT Rubberized Black/Electric Green TUFF Hybrid Phone Protector Cover for SHARP 306 (Aquos Crystal) And MYBAT Tempered Glass Screen Protector for SHARP 306 (Aquos Crystal) The Tempered Glass is The surface of The Tempered Glass has a hardness of The Tempered Glass has an oleophobic coating that prevents fingerprints and other contaminants and makes the film easy to clean. The Tempered Glass is coated on the back with a strong silicon adhesive that makes installation easy and the film attached firmly so as to not affect the touch screen&#39;s sensitivity. If broken, the Tempered Glass breaks into small pieces, which are not sharp, making it safer than other glass products.