2-way privacy filter, removable, for 43.2 cm (17") 16:10 notebooks Narrows the field of vision on the screen to +/-30 degrees Self-adhesive filter can be easily applied and removed as needed Blue light reduction: Filters out 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