Privacy screen uses a Micro-louver technology that darkens the screen view from the sides (+/- 30 degrees from center) - Designed to fit laptops with 12.5" 16:9 display; Does not interfere when closing the lid - Share the screen with someone next to you by flipping the filter up, without removing it completely - This laptop privacy screen blocks up to 51% of blue light - Use the included adhesive strips or flip-up tabs to install the screen protector