Good to know- Prevent nosy strangers from seeing what's on your laptop - this privacy filter limits the viewing angle to 30°- It has a magnetic strip that makes it easy to attach to your screen- Work for longer with less eye strain, thanks to the blue-light filter and anti-glare coating - You can choose between a matte or glossy finish - the screen filter is easily reversible- The 16:9 aspect ratio means it'll cover your widescreen display from edge to edge