1. Material: ABS 2. Printing medium: thermal paper 3. Charging interface: MICRO USB 4. Power source: USB charging/battery powered 5. Built-in battery: 1000mAh lithium battery 6. Network printing: support 7. Double-sided printing: not supported 8. Printing format: 5.7x3 cm 9. Dimensions: 11x8x3.5 cm 10. Net weight: 160 grams 11. Small body, easy to carry