Thermal Printing: D80 Thermal Printer uses thermal printing technology, inkless, carbon or ribbon is no need, A4 thermal paper roll, convenient for printing wherever you need it (Comes with a roll of original thermal paper for clearer printing). Multifunctional Printer: Thermal printer comes with an APP with rich templates. You can connect to Bluetooth via the application and enjoy printing easily. It is suitable for printing office documents, design drawings, educational materials, receipts and invoices. Fast and Easy Printing: With a 203dpi resolution, this printer ensures crisp and clear prints. Simply connect via USB or Bluetooth to print from your smartphone, tablet, or computer. Compact & Portable: 10.4"X3.15"X1.89" small size printer, lightweight, portable, it can be held with hand, compact fits in your backpack, briefcases, vehicles; convenient mobile printing anywhere-business/travel/car/office/school. Comprehensive Customer Service: Email us if you can't solve the problem from detail page or user manual, we will reply you within 24 hours. Please be careful to avoid scratches when changing paper rolls and using the printer. Keep printer out of the reach