GranVela High Definition Apple Watch Screen Protector 0.25mm Premium iWatch Tempered Glass Screen Protector Film for Apple Watch 38mm Size-38mm tempered glass Specifically designed for Apple Watch 38mm. Optical transmittance grade, ultra-low reflection, high Transparency. The glass is coated on the back with a strong silicon adhesive that makes installation easy and attaches the film firmly so as to not affect the touch screen's sensitivity. Automatic bonding,High quality antistatic adsorption film ,make the product bonding and separation simple,easy to operate. Long-Lasting Protection from Scratches, Bubble Free, Significantly Reduces Glare, Dust, Oil & Fingerprint Smudges.