E 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. E LG 25UM58-P, 63.5 cm (25"), 2560 x 1080 pixels, QXGA, LED, 14 ms, Black LG 25UM58-P. Display diagonal: 63.5 cm (25"), Display resolution: 2560 x 1080 pixels, HD type: QXGA, Display technology: LED, Response time: 14 ms, Native aspect ratio: 21:9, Viewing angle, horizontal: 178°, Viewing angle, vertical: 178°. VESA mounting. Product colour: Black https://www.monitornerds.com/lg-25um58-p-review-cheap-ultra-wide-dual-monitor-alternative/ The LG 25UM58-P is an excellent and affordable ultra-wide monitor which can replace a dual-head 1080p screen setup. If you check its latest pricing, it more or less costs the same as two typical 16:9 displays, making it an energy and cost effici... The LG 25UM58-P is an excellent choice for thrifty gamers who would want to join in on the ultra-wide gaming arena. Of course, aspiring professionals can also take advantage of this fantastic, bargain monitor to replace messy dual-head setups at home or i...