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 LG OLED 6LA, 77", 3840 x 2160 pixels, OLED, Smart TV, Wi-Fi, Black LG OLED 6LA. Display diagonal: 77", Display resolution: 3840 x 2160 pixels, HD type: 4K Ultra HD, Display technology: OLED, Screen shape: Flat. Smart TV. Motion interpolation technology: OLED Motion, Native aspect ratio: 16:9. Wi-Fi, Ethernet LAN. Product color: Black