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 Hisense 65E79S, 165.1 cm (65"), 3840 x 2160 pixels, QLED, Smart TV, Wi-Fi, Black Hisense 65E79S. Display diagonal: 165.1 cm (65"), Display resolution: 3840 x 2160 pixels, HD type: 4K Ultra HD, Display technology: QLED, Screen shape: Flat. Smart TV. Response time: 8 ms, Native aspect ratio: 16:9. Digital signal format system: DVB-T2, DVB-T, DVB-C, DVB-S2, DVB-S. Wi-Fi, Ethernet LAN. Product colour: Black