Mini printer: The printer is designed with super mini materials. This portable printer weighs only 2 pounds, which is about the weight of two cell phones. Portable printers fit easily into your bag and can serve your needs when you don't have a printer. Allows you to print anytime, anywhere. The files you need. Multiple sizes: A variety of printers can support multiple sizes, including US Letter&Legal, A4&A5, 2&3&4 inches (width 216/216/210/210/107/77/57mm) thermal paper Thermal inkless printing: Thermal printers use thermal technology, which allows you to no longer rely on separate ink cartridges and is more environmentally friendly. At the same time, it is cheaper than traditional printers, greatly reducing printing costs. Warm reminder: This printer is a thermal printer and only supports thermal printing paper. Bluetooth Printer - Transparent Printing and Large-Capacity Battery: This printer uses high-definition printing technology to provide you with clear printing results. The 4200mAh battery design supports printing up to 600 sheets of paper. Bluetooth Printer - High Compatibility Supports Computers and Mobile Phones: The Bluetooth printer can be used with wireless Bluetooth smart devices on IOS and Android systems, and can also be connected to laptops and computers via USB-C to print the files you need. Installation can be completed within 2 minutes after unboxing. (Reminder: When using a smartphone to print, please download the APP in advance and then install the driver on your laptop first) Note: Products with power plugs are designed for use in the United States. Countries use different sockets and voltages, and this product may require an adapter or converter for use in your destination country. Please check compatibility before purchasing.