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 Sharp E438, Digital signage flat panel, 42.5", LCD, 3840 x 2160 pixels, 16/7 Sharp E438. Product design: Digital signage flat panel. Display diagonal: 42.5", Display technology: LCD, Display resolution: 3840 x 2160 pixels, Display brightness: 350 cd/m², HD type: 4K Ultra HD. Operating hours (hours/days): 16/7. Product color: Black