Usage Tips:These light dimming stickers are an excellent choice for anyone looking to manage the brightness of their electronic devices. They are suitable for use on a variety of surfaces and can be easily adjusted to fit your needs. The stickers help reduce eye strain and create a more comfortable environment by blocking unwanted light.Features-Color:Black-Material:PVC adhesive-Size:20.70X11.00X0.10cm/8.14X4.32X0.04in-Highefficiency light blocking: effectively blocks led light, enhancing sleep quality by reducing light interference-Brightness adjustment: allows for easy adjustment of led light brightness, catering to various lighting needs-Effortless application: the selfadhesive design ensures easy application and removal without leaving any marks-Versatile functionality: ideal for use with routers, tvs, and other led light devices, providing broad applicability- : made from great materials, these stickers offer durability and longterm reliabilityPackage list: 6 x sheets of blackout stickers