Dell UltraSharp U2717D 27-inch InfinityEdge Monitor LED-Lit Monitor Diagonal Viewing Size: 68.47 cm (27 inches). Optimal Resolution: 2560 x 1440 at 60 Hz. Panel Technology, Surface: In-plane switching Type , Anti-Glare with 3H hardness. Preset Display Area (H x V): 569.736 mm x 335.664 mm 22.43 inches x 13.21 inches. Backlight Technology: LED. Display Type: Widescreen Flat Panel Display.