G 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. G LG 49UM5N-H, Digital signage flat panel, 124.5 cm (49"), 3840 x 2160 pixels, Wi-Fi, 24/7 LG 49UM5N-H. Product design: Digital signage flat panel. Display diagonal: 124.5 cm (49"), Display resolution: 3840 x 2160 pixels, Display brightness: 500 cd/m², HD type: 4K Ultra HD. Wi-Fi. Operating hours (hours/days): 24/7. Operating system installed: WebOS. Product colour: Black