Made by mypressi, it’s called the ‘TWIST’, sells for $129 and uses Co2 cartridges (via a “pneumatic engine”), so power is not required.
May I suggest this is a novelty, and will not exactly be mistaken for the next Cabbage Patch doll runaway sales success?
[Gizmodo: World’s First Portable Espresso Machine Now Available for US Caffeine Addicts]