Yakamoz Microsoft Lumia 640 Tempered Glass Screen Protector - 0.3 mm Ultra Thin HD Clear Glass Screen Protector for Microsoft Lumia 640 [Retail Package and Free Stylus Pen] Compatible with Microsoft Lumia 640 Ultra-clear with 99.9% transparency to promote an optimal, natural viewing experience 9H hardness to prevent the screen from scratching Shield and protect your screen from unwanted scratches and blemishes Ultra clear, high-definition PET plastic made of the highest quality material available for any screen protectors