Cost-Effective, Ink Printing: The portable printer uses advanced thermal printing technology without the cost of ink, toner, and ribbon, and comes with a roll of A4 thermal paper. NOTE: Only supports thermal printing paper, not support regular copy paper. Crisp Printing Quality & Long Battery Life: Experience crystal-clear printing with our portable wireless printer, featuring 2 built-in 2600mAh batteries for continuous printing of up to 3 hours, long standby time of 90 days. Strong Compatibility: The portable bluetooth printer is equipped with a wide range of file formats, including Word, Excel, PPT, TXT, and JPG. The Print App also supports template printing and photo printing. Easy Portability for On-the-Go Printing: Small Printer is small in size and weighs only 1.45lb, which can be easily put into your bag to help you work anywhere. More Printing Options: The A4 portable printer support multiple thermal paper sizes, such as US letter/A4/4""/3""/2"" width, meet your printing needs for many occasions!