Musse Apple Watch Tempered Glass Screen Protector, 38mm Premium pple Watch Screen Protector for Apple Watch (38mm) Ultra-Thin 0.1mm, HD Clear Transparency, Scratch-Resistant Compatible with Apple Watch 38mm Sport Edition All Models. Extremely high hardness: resists scratches up to 9H (harder than a knife) Dust-free, fingerprint-free, one-push super easiy installation, bubble free Ultra-high light transmittance: optical transmittance grade, ultra-low reflection, high Transparency Optically transparent, virtually invisible and HD clear screen protector with smooth glass-like surface and "True Touch" feel. A great alternative to a typical "static cling" PET screeen protector.