Print parameters: 200DPI Printing method: thermal inkless black and white printing Battery capacity: 1200mAh 3.4V potassium battery 2A charging Printing paper: 57X25mm Connection method: Bluetooth wireless, black and white printing without ink Office and study are clear at a glance, save procrastination, set small goals every day, make life and work more fulfilling, it is a printer for wrong questions, and it is also a learning machine. The printer can be held in one hand and can be put into a pocket. The thickness of the printer is 35. It can be held in one hand and can be carried with you. Click on the software to search for questions, take photos of the questions on your mobile phone and print them, and quickly analyze the answers. Covers subject analysis and knowledge points from primary school to high school, massive question bank, accurate matching. Smart Bluetooth connection can be used for Apple and Android, compatible with Word documents: work plan, memo list, daily calendar, meeting notes can be easily done, and photos can be recorded as you like. Good assistant: not only can be used to print wrong learning materials, but also Record the child's growth, the feeling of the journey, and express love to the person you love.