No impairment of display representation and touchscreen functionality. You will hardly notice any difference compared to a Huami Amazfit GTS without a screen protector. Scratch-resistant due to the special hard-coated surface! Very resistant to scratches and abrasion! 4H pencil hardness. Intentionally smaller than the Huami Amazfit GTS glass, as it is curved, bubble-free, and can be removed without residue at any time (without adhesive). Easy installation! No bubble formation possible on a dust-free display! When applying the film, the air is displaced and it adheres to the display as if by itself. Can be removed without residue at any time! Made in Germany - construction, cutting, and finishing at fair wages in Germany.