Fangrui Product Details 1. C19 200dpi Student Homework Printer Bluetooth Inkless Pocket Printer Blue 2. Take Pictures To Search For Questions, Identify Them Accurately, And Make Your Own Wrong Question Book 3. Print Vintage Black And White Photos To Record Life Moments 4. Print The Note List And Make A Memo 5. Inkless Printing, Built-in Lithium Battery, Charging For 2 Hours, Can Print 8 Rolls Of Paper 6. Resolution: 200dpi 7. Printing Method: Thermal Inkless Black And White Printing 8. Battery Capacity: 1200mah 3.4v Lithium Battery 2a Charging 9. Printing Paper: 57x25mm57x28mm57x30mm 10. Connection Method: Bluetooth Wireless, Inkless Black And White Printing 11. Language Specifications: The Current App Version Supports These Languages: English, French, Italian, Spanish, German, Greek, Russian, Polish, Japanese, Korean, Thai 12. Input: 5v 1a 13. Bluetooth Version: 3.04.0 14. Weight: About 160g 15. Dimensions: 8 X 8 X 3.8cm