Features: 1. High-quality print head with long service life and good printing quality. Using advanced thermal printing technology, no ink cartridges are required. 2. Multi-function: Support connection with smart phone. Support a variety of functions, can print labels, messages, lists, records, wrong questions, etc. 3. Help students learn, improve learning efficiency, and make mistakes no longer messy, which is very suitable for students. The mini printer looks cute, you can give this printer as a gift to your child. 4. Built-in 1000mAh rechargeable battery, low working noise, no ink cartridge is needed when using thermal printer, low operating cost. 200DPI resolution, good printing quality. 5. Mini portability: small and light body, can be put in a pocket or bag, carry it with you, does not take up space. Notice: 1.Actual color may be slightly different from the image due to different monitor and light effect 2.Please allow 1-3cm deviation due to manual measurement Printing parameters: 200DPI Printing method: thermal inkless black and white printing Battery capacity: 1000 mAh 7.4V lithium battery; 2A charging Printing paper: 57X25mm or 57X30mm can be used, the original paper can be printed more clearly Connection method: Bluetooth-compatiple wireless, inkless black and white printing Product size: 10.6X7.6X3.7cm Package List: 1 set x Printer