THIS ULTRA-THIN WEBCAM COVER PROTECTS YOUR SECURITY & PRIVACY & PREVENTS WEBCAM SPYING. IF YOU BUY ONE THEN YOU GET ONE FREE! SIMPLY PLACE YOUR FINGER ON THE DISC &SLIDE YOUR FINGER TO HIDE/UNHIDE THE WEB CAMERA. FITS MOST SMARTPHONES, SMART TV'S, PS4, XBOX, LAPTOPS, MACBOOKS, PCS, TABLETS & ANY 3RD PARTY EXTERNAL WEBCAMS. THE THIN SLIDING DISC ALLOWS FOR EASY ACCESS TO THE WEB CAMERA TO BE OPEN OR LOCKS YOUR WEBCAM TO PREVENT THOSE HACKERS &PRYING EYES. 1.5" W X 0.583" H