The new Acer Swift 5 15.6-inch is a larger version of the Swift 5 which uses magnesium alloys to keep the weight under 1 kg. This is an impressive feat for a laptop of this size and it puts the Swift 5 15.6-inch in competition with the LG Gram 15 in features, build, and hardware.
https://www.notebookcheck.net/The-new-sub-1kg-Swift-5-is-Acer-s-answer-to-the-LG-Gram-15.305186.0.html