: This uses thermal technology (no ink required) to print full-sized A4 or Letter documents. It is much closer to the "pocket" size the ZUtA aimed for, though it requires specific thermal paper. It is highly rated on Amazon for its extreme portability and ease of use with smartphones.

The (originally known as the ZUtA Robotic Printer) is currently unavailable for purchase from major retailers as the company has faced significant production and delivery challenges following its successful Kickstarter campaign. If you are looking for a portable printing solution, Current Status of ZUtA Pocket Printer

Since the ZUtA is not a viable option right now, these "pocket-sized" alternatives are the top-rated choices for printing on the go.

: This is one of the smallest and lightest professional printers available. It charges via USB and is designed for professionals who need to print contracts or invoices from a briefcase. Epson's official site notes its built-in battery and 5.7-pound frame.

: The ZUtA Robotic Printer is not in mass production. While it was a highly anticipated "robot" that traveled across a page to print, the official ZUtA Labs website and social media channels have been largely inactive regarding new orders.