Xprinter P81 USB Interface + Portable Bluetooth Thermal Printer 1. Supports mobile phone Bluetoothcomputer direct printing, easy and fast to use 2. Built-in paper bin design, 30mm diameter paper roll 3. Built-in lithium battery, long-lasting battery life, print anytime, anywhere 4. APP has rich functions, supports officetest paperwrong questionsmaterialsdocument printing and multiple suitable use methods Parameters 1. Printing method: direct line thermal 2. Resolution: 203 DPI 3. Printing width: 216mm 4. Memory: 8M Flash memory 8MB SDRAM 5. Paper type: continuous thermal paper 6. Media width: 150.6~220 mm 7. Paper roll outer diameter: 30mm 8. Media thickness: 60-150 microns 9. Peeling mode: manual tearing 10. Battery capacity: 11.1V1200mAh 11. Power adapter: Input: AC 100-240V, 50-60Hz 12. Power supply: Output: DC 5V2A 13. Material: ABS 14. Weight: 0.75kg 15. Dimensions: 260 x 78 x 50.5mm 16. Working environment: 5 degrees Celsius to 40 degrees Celsius, humidity (non-condensing): 25-85% 17. Storage environment: -40 degrees Celsius to 60 degrees Celsius, humidity (non-condensing): 10-90%