Polono has launched its latest thermal wireless printer, the Polono D810. The affordable wireless printer has a 203 dpi resolution and offers around 50 minutes of battery life on a single charge. The inkless printer is compatible with everything from Android and iOS to Windows and Mac devices. It is now available for purchase via Amazon.https://www.notebookcheck.net/Polono-D810-portable-thermal-wireless-printer-launches-with-up-to-50-minutes-of-battery-life.946315.0.html
Special paper is needed... I would avoid this, because it's really not a travel printer because of that.
Nothing more special than credit card payment machine paper. It's just regular paper with ability to produce black ink.