Scratch-resistant, hard-coated surface with 3H pencil hardness. Test winner in c't magazine issue No. 3 (2012): Anti-glare films tested. Among manufacturers like Belkin, Folix, Hama, hsw3000, Moshi, and 3M, the dipos anti-reflective film is the only one rated very good for glare reduction. Deliberately smaller than the Huami Amazfit Bip S glass, as it is curved (see photos), it is bubble-free and can be removed without residue at any time (no adhesive). Extremely easy to apply - 100% bubble-free installation on a cleaned display! The special silicone adhesive layer displaces air during application and adheres seamlessly to the display. No impact on usability! The dipos screen protector provides a pleasant touch experience and is optimized for the Huami Amazfit Bip S.