Picked these up from a retail store that used them for everyday operation for about 2 years until the store went belly up so they sat for years unused. The monitors themselves were actually better than the computers that used them. They have a glass LCD anti glare screen and not plastic with a contrast ratio of 1000:1 . Tested them for functionality and brightness and everything works fine. These monitors are not sought after for gaming but they work well for crypto mining or surveillance use.Any questions please feel free to contact me and I hope you enjoy all of your purchases on .