1Print Parameters: This Bluetooth printer supports thermal and inkless printing, suitable for paper widths of 57216mm, with black and white imaging, supports A4 and A5 thermal printing paper. 2High Compatibility: This thermal printer can be used with computers and mobile phones, suitable for iOS and for Android system, can be connected to the device through Type C to print the files you need. 3Battery Powered: This portable printer has a built in 7.4V lithium battery with a large capacity of 2600mAh, ensuring long time printing, can also be set with automatic shutdown time to save power. 4Thermal Printing: This Bluetooth printer uses thermal technology, allowing you to no longer rely on individual ink cartridges, greatly reducing printing costs and making it more environment friendly. 5Compact Structure: This Bluetooth thermal printer has a compact size that is easy to operate and carry, and can easily fit into your bag, allowing you to print files anytime and anywhere.