D means that the product is rated in its category in terms of energy efficiency. The Energy Labeling system is based on EU Regulation 2017/1369/EU. D LG 20MK400H-B, 49,5 cm (19.5"), 1366 x 768 Pixel, WXGA, LED, 5 ms, Schwarz LG 20MK400H-B. Bildschirmdiagonale: 49,5 cm (19.5"), Bildschirmauflösung: 1366 x 768 Pixel, HD-Typ: WXGA, Display-Technologie: LED, Display-Oberfläche: Matt, Reaktionszeit: 5 ms, Native Seitenverhältnis: 16:9, Blickwinkel, horizontal: 90°, Blickwinkel, vertikal: 65°. VESA-Halterung. Produktfarbe: Schwarz