E 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. E EIZO FlexScan EV2430, 61 cm (24"), 1920 x 1200 pixels EIZO FlexScan EV2430. Display diagonal: 61 cm (24"), Display resolution: 1920 x 1200 pixels, Native aspect ratio: 16:10