Features: Universally device compatibility: universally sizing accommodates lenses on mainstream devices including smartphones, laptops and tablets, for both single and double lens models. 0.7mm thin profile does not impeding laptop opening/closing, precisely avoids camera modules, covering privacy protections scenarios at home, in offices and while travelling. Features sliding cover mechanisms that provide precise lens obstruction when closed, eliminating privacy risks from hacking or accidental recording at source; Highly definition, interferences resistant transparency: Utilises highly transmittance PC glass substrates with over 93% light transmission, maintaining photo and video call quality when open; 3-second operating: Sliding models require a gentle push to activate/deactivate, enable rapid attachment/detachment with easy. Specifications: Component: ABS plastic Color: black\white\green Weight: 5gram Size: 4x2x1cm/1.6x0.78x0.39in Shape: Square/OvalType Package Includes: 1PC Lens privacy cover note: There might be a bit color distortions due to different computer resolution There might be 1-2cm size errors due to different computer resolution