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 Philips 241E2FD, 61 cm (24"), 1920 x 1080 Pixel Philips 241E2FD. Bildschirmdiagonale: 61 cm (24"), Display-Auflösung: 1920 x 1080 Pixel, Native aspect ratio: 16:9