Exclusively designed for Apple Watch Ultra 2/1 49mm. Do not fit other models. Please double check the model of your watch before purchasingBuilt with 9H hardness tempered glass, highly protect the screen against accidental scratches, abrasions, shocks and bumps99% Light transmittance. Offer a high transparency screen viewing experience. the ultra-thin glass ensures a quick response to every touch and tap. Anti-fingerprints and oil-proofThe included special alignment tool makes it super simple and accurate to install the screen protector without leaving any bubbles