Description blue light from your screen can harm your eyes and interfere with sleep optiguard glass with blue shield is ideal if you use screens for prolonged periods helping to keep your eyes safe and your sleep sound the screen is easy to fit and the shatterproof glass means even if the protector breaks your iphone screen should not be damaged compatibility iphone 6s iphone 6 features 03mm thin premium japanese tempered glass with blue shield lifetime warranty 9h scratch an