MONITOR Clean used Dell monitor Basic monitor specifications: Screen size: 21.5 inches (sometimes classified as 22 inches). Panel Type: IPS, which is excellent because it provides wide viewing angles and accurate, consistent colors. Resolution: Full HD (1920 × 1080) with a refresh rate of 60 Hz. Aspect Ratio: 16:9 (widescreen). Brightness: 250 cd/m2. Contrast Ratio: 1000:1 (static) and up to 4,000,000:1 (dynamic). Response Time: 6 ms (gray to gray). Viewing Angles: 178 degrees horizontal and vertical, meaning clear picture even if you look at it from the side. Type: Monitor Brand: Dell