Dell Professional P2411HB 24 Inch LCD Monitor Diagonal Viewable Size: 60.97cm. Panel & Screen Type: TN- Twisted Nematic, active matrix - TFT LCD. Max Preset Resolution: 1920 X 1080. Contrast Ratio: 1000 : 1 (typical), 2 million:1 (dynamic) Backlight Technology: LED. Brightness: 250 cd/m2 Response Time: ... Max Viewing Angle (vertical/horizontal): الماركة ديل الحالة مستعمل