F 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. F ASUS TUF Gaming VG27WQ, 27", 2560 x 1440 pixels, Full HD, LED, 4 ms, Black ASUS TUF Gaming VG27WQ. Display diagonal: 27", Display resolution: 2560 x 1440 pixels, HD type: Full HD, Display technology: LED, Response time: 4 ms, Native aspect ratio: 16:9, Viewing angle, horizontal: 178°, Viewing angle, vertical: 178°. Built-in speaker(s). VESA mounting, Height adjustment. Product color: Black