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 AOC V4 U27V4, 27", 3840 x 2160 pixels, 4K Ultra HD, LED, 4 ms, Black AOC V4 U27V4. Display diagonal: 27", Display resolution: 3840 x 2160 pixels, HD type: 4K Ultra HD, Display technology: LED, Display surface: Matt, Response time: 4 ms, Native aspect ratio: 16:9, Viewing angle, horizontal: 178°, Viewing angle, vertical: 178°. Built-in speaker(s). VESA mounting. Product color: Black https://www.monitornerds.com/aoc-u27v4ea-review/ on AmazonThe AOC U27V4EA is a budget-conscious 4K monitor with an IPS panel that was designed for home and office use. It offers essential features for basic use in a slim and sleek package that looks more expensive than the actual price tag. Let's c... Great Image Quality and Accuracy, Affordable, FreeSync Compatible, Slim and Sleek, Tilt-Limited Stand, Limited Connectivity Options, Mediocre Contrast The AOC U27V4EA is a practical choice for users who want a crisp screen with tons of space to work or play around with. Its IPS panel offers great color performance and plenty of brightness for the price. It also looks attractive compared to other pudgy b...