Thanks to this filter, only the person in front of the screen can see the data displayed. The technology used allows to darken the pictures & text on the screen, avoiding visibility to neighbors. The non-vision angle is 30&176;. Protects your LCD screen from scratches & fingerprints. Reduces glare for a better sight comfort. Enhances contrasts. Insures clear & not deformed picture. Anti radiation model, blocking up to 99% of the radiations ELF/VLF e-field, antistatic. Anti-glare norm: AOA. 2 fixation modes: with stickers or with slide channels.\n\n\n\n Product ID: SSP13UF\n\n\n\n\n\n Model: Privacy & Protection Cover for Laptop/ Notebook Screen Size 13.3"" 16/9\n\n Datasheet: http://objects.icecat.biz/objects/mmo_24750511_1525791104_2485_7446.pdf\n\n\n\n\n\n\n\n\n\n\n\n