No impairment of display performance and touchscreen functionality. You will hardly notice any difference compared to an Amazon Kindle Paperwhite (2021) without a screen protector. Scratch-resistant due to the special hard-coated surface! Highly resistant to scratches and abrasion with a pencil hardness of 4H. Precisely tailored for the Amazon Kindle Paperwhite (2021). Excellent quality ensured by the use of state-of-the-art precision machines (laser cutting technology) - optimal edge adhesion and very good shape stability. 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 at any time without leaving residue! Made in Germany - construction, cutting, and finishing at fair wages in Germany.