Pleasefully charge before use. Printing photos may not work well without sufficient power Olaf Portable Mini Printer Thermal Label Printer Sticker Inkless HD Pocket Printers For Phone Bluetooth Miniprint Printing Photo Product parameters: Printing parameters: 200DPI Printing method: thermal inkless black and white printing Battery capacity: 1200 mA 3.7V power battery 2A charging Printing paper: 57X25mm, original printing paper needs to be purchased for easy replacement Connection method: Blue wireless inkless black and white printing Language specification: Simplified Chinese Traditional Chinese English Spanish Arabic Italian Japanese Korean German French Portuguese Russian Thai Vietnamese Greek Factory standard configuration: host+charging cable+manual+certificate of conformity+1 roll of printing paper APP usage: Androidd downloads "Fun print"or"Iprint"in Google Market IOS download "Fun print"or"Iprint"in the application market