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 27 3D, 68.6 cm (27"), 3840 x 2160 pixels, 4K Ultra HD, LED, 6 ms, Black Lenovo ThinkVision 27 3D. Display diagonal: 68.6 cm (27"), Display resolution: 3840 x 2160 pixels, HD type: 4K Ultra HD, Display technology: LED, Response time: 6 ms, Native aspect ratio: 16:9, Viewing angle, horizontal: 178°, Viewing angle, vertical: 178°. Built-in speaker(s). Built-in USB hub, USB hub version: 3.2 Gen 1 (3.1 Gen 1). VESA mounting, Height adjustment. Product colour: Black https://www.techradar.com/pro/lenovo-thinkvision-27-3d-review I can't tell you my exact words when Lenovo's 3D software first kicked in because this is a family magazine, but suffice to say that they were accompanied by a cackle of delighted laughter. This was all the more surprising as I've seen glasses-free 3D in...