BodyGuardz Pure Glass ScreenGuardz for Samsung Galaxy S 4 Protection - 8H+ surface hardness surpasses steel, offering superior durability and scratch prevention, as well as shock, heat and chemical resistance Clarity - Crystal clear resolution and optical clarity far exceeds that of ordinary plastic protectors Appearance - A smudge-resistant coating prevents fingerprints and facilitates cleaning Functionality - A thin .4mm thickness allows for greater touch sensitivity and exceptional form factor Safety - Anti-shatter glass minimizes risk of injury if the glass is broken  Ease of Use - A special adhesive makes application and removal a snap