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 Lenovo ThinkVision P40w-20, 100,8 cm (39.7"), 5120 x 2160 pixels, 5K Ultra HD, LED, 6 ms, Black Lenovo ThinkVision P40w-20. Display diagonal: 100,8 cm (39.7"), Display resolution: 5120 x 2160 pixels, HD type: 5K Ultra HD, Display technology: LED, Response time: 6 ms, Native aspect ratio: 21:9, Viewing angle, horizontal: 178°, Viewing angle, vertical: 178°. Built-in USB hub. VESA mounting, Height adjustment. Product colour: Black