A31 Bluetooth Handheld Portable Self-adhesive Thermal Printer 1. Connection method: Bluetooth 2. Battery: 1000mAh 3. Charging interface: Micro-USB 4. Resolution: 200dpi 5. Printing method: thermal printing 6. Paper roll size: 57x30mm 7. All-in-one printer: supports multiple functions, can print photos, labels, messages, lists, records, files, etc. 8. The APP provides a variety of fonts and themes to make your photos more fashionable 9. Mini and cute appearance: small and light body, can be put in a pocket or bag, easy to carry around 10. 200DPI resolution, clear print quality 11. Suitable for study, office, home and travel 12. It is convenient for your life to record the scenery you see, record his or her sweet words, collect the exercises you did wrong, interesting and practical 13. Built-in 1000mAh rechargeable battery, long battery life 14. Low-noise work, no ink cartridge needed when thermal printer is used, low running cost 15. Massive vocabulary, built-in English words, synchronous teaching materials 16. Take pictures and scan, using OCR character recognition technology 17. Take a photo to identify the question, and analyze it in seconds 18. Size: 90x45x82mm 19. Weight: 160 grams