Thermal er, Style: Bluetooth Edition+500pcs A4 Paper 1. The built-in battery can be used outdoors, and it can be immediaty when ing is needed, without the need to start up, warm up, and connect wires like an inkjet laser er for a 2. Special ing paper, BPA-, safe and environmentally friendly 3. ent with ballpoint pen, pencil and fountain pen 4. Thick material, suitable for different use scenarios: student homework, work materials, etc. 5. The hand can be stored for a , and the hand can be stored for more than 5 years in a dry room at room temperature without direct sunlight 6. ing media: thermal paper 7. format: A 48. Specifications: 50 sheets/roll 9. Supported devices: mobile phones, tablets, computers 10. Connection method: Bluetooth version: Bluetooth+USB; remote version: wifi+Bluetooth+USB 11. Bluetooth version: suitable for short-distance on-site ing; remote version: suitable for long-distance ing, upgraded WiFi cloud ing function, faster speed and higher efficiency 12. Application: wrong title er 13. Power supply mode: USB charging/built-in lithium battery 14. Battery capacity: about 800mah 15. ing paper size: 210 x 297mm 16. er size: 275x110x60mm 17. Weight: 1.2kg