It automatically powers on when the briefcase lid is opened, and turns off when it's closed, LG has included a 20-watt, four-channel Dolby Atmos sound system in the inner lid for all-in-one ...

It is a 1970s-era multimedia briefcase called the Audio Study Mate. This odd beast, as you can see in the video below, was a cassette player that also included a 35mm filmstrip viewer.