No impairment of display performance and touchscreen functionality. You will hardly notice any difference compared to a Doogee S97 Pro without a screen protector. Scratch-resistant due to the special hard-coated surface! Highly resistant to scratches and abrasion! 4H pencil hardness. Compatible with Doogee S97 Pro, excellent quality ensured by the use of state-of-the-art precision machines (laser cutting technology) - optimal edge adhesion, very good shape stability. Easy installation! No bubble formation possible on a dust-free display! When applying the film, 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.