C 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. C Sharp MultiSync EA272Q, 27", 2560 x 1440 pixels, 4K Ultra HD, LCD, 6 ms, White Sharp MultiSync EA272Q. Display diagonal: 27", Display resolution: 2560 x 1440 pixels, HD type: 4K Ultra HD, Display technology: LCD, Response time: 6 ms, Native aspect ratio: 16:9, Viewing angle, horizontal: 178°, Viewing angle, vertical: 178°. VESA mounting, Height adjustment. Product color: White