Connection Method: Supports wireless BT 4.0 connection to smartphones and USB cable connection to PC. Follow the user manual to download the relevant APP (PeriPage)/driver on your devices. Compatible with Windows, Android, and iOS systems. Print Anything You Want: Supports printing photos, labels, messages, lists, OCR text recognition, AR pictures, incorrect questions, web printing, and so on. The APP offers a variety of fonts and themes to make your photos stylish, fun, and practical. Built-in Battery: Built-in 1000mAh rechargeable battery, operating with low noise. The thermal printer does not require an ink cartridge during use, resulting in low operating costs. Thermal Paper Specifications: Printer with print head, can print 57mm (width) x 30mm (roll diameter) thermal paper, 203 DPI resolution, good printing quality. Mini Pocket Printer: Small and lightweight body, made of ABS + PC material, can be put in your pocket or bag, easy to carry anywhere. The best gift for students, office workers, lovers, friends, and family.