The Lenovo 13.3-inch Bright Screen Privacy Filter for X13 Yoga Gen4 from 3M offers world class privacy without substantial tradeoffs in brightness or security. On average, 25% brighter than the standard 3M black privacy filters. Proprietary nanolouver technology enables 85% transmission of the device's brightness . The Lenovo 13.3-inch Bright Screen Privacy Filter for X13 Yoga Gen4 from 3M also blocks 35% of harmful blue light and comes with an antimicrobial coating for greater health and safety.