Portable Printer: MT810 portable printers wireless is easier to use than traditional printers over its entire product life without any use of carbon/ribbon/ink; The compact printers is half the size of A4 paper. This handheld printers can simply slide into your backpack or briefcase. 3 Printing Sizes: MT810 wireless printers support A4 & A5 sizes printing on HPRT 210mm-wide roll paper and 110mm-wide paper, which can meet your multiple printing demands. Just load the roll paper and choose the right size on Here Print APP. The roll paper also support you to print small note and long banner. You don't even have to carry printing paper separately. High Compatibilty: The portable printer is compatible with Laptops-mac OS & Windows (with USB cables), phones-i OS & Android (with bluetooth connection). Large Capacity: 2500m Ah inbuilt rechargeable battery=4 days long duration=1600 inches length of paperwork printing=400+ pieces of paperwork. Comprehensive Customer Service: Email us