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 LG 24GS50F-B, 60.2 cm (23.7"), 1920 x 1080 pixels, Full HD, LCD, 5 ms, Black LG 24GS50F-B. Display diagonal: 60.2 cm (23.7"), Display resolution: 1920 x 1080 pixels, HD type: Full HD, Display technology: LCD, Response time: 5 ms, Native aspect ratio: 16:9, Viewing angle, horizontal: 178°, Viewing angle, vertical: 178°. VESA mounting. Product colour: Black