Removable 2-way privacy filter for 31.8 cm (12.5") notebooks Self-adhesive filter is easily applied and removed as needed Blue light reduction: Filters out the harmful rays by up to 48%, easing eye strain and aiding natural sleep patterns Touch screen compatible with anti-fingerprint coating: Up to 3H hardness, makes fingerprints on the filter surface invisible Anti-glare coating: Reduces glare from any outside light sources