ENERGY STAR® is the government-backed symbol for energy efficiency, providing simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. ENERGY STAR is the simple choice for energy efficiency, making it easy for consumers and businesses to purchase products that save them money and protect the environment. ENERGY STAR LG 55EF9500, 139.7 cm (55"), 3840 x 2160 pixels, 3D, Smart TV, Wi-Fi, Black, Metallic LG 55EF9500. Display diagonal: 139.7 cm (55"), Display resolution: 3840 x 2160 pixels, HD type: 4K Ultra HD, Display technology: OLED, Screen shape: Flat. 3D. Smart TV. Native aspect ratio: 16:9. Wi-Fi, Ethernet LAN. Product colour: Black, Metallic https://www.pcmag.com/reviews/lg-55ef9500 So far, organic light-emitting diode (OLED) technology has primarily been limited to curved displays manufactured by LG, like the Editors' Choice EG9600 ( at Amazon)  series. Curved screens haven't exactly wowed us as a compelling feature for premium HDTV... Excellent picture quality, Impressively wide color range, Loaded with features, Expensive, Only three HDMI ports LG's EF9500 line of flat OLED HDTVs will give you some of the best 4K picture quality you can buy, at a still-very-high price...