Portable Printer: Support Wireless BT 4.0 connected with smartphone, please follow the user guide to download relative APP "Tiny Print" on your smartphone, you can print anytime and anywhere when they connect successfully Printing All You Like: Support print photos, messages, lists, barcodes, hand drawing, OCR text recognition, banners, files, web printing and so on. The APP offers a variety of images and themes to make your content stylish, fun and practical Print Clearer: Printer with high quality print head, 200DPI resolution, good and clear printing effect Built-in Battery: Built-in 1200mAh rechargeable battery. Working in low noise, the thermal printer does not need ink cartridge when using, low operation cost Stylish Appearance: Looks cute and stylish, can be a great gift for friends, children, family, lover, and so on Specifications: Resolution: 200DPI Printing method: thermal/inkless Print color: black and white Bluetooth: 4.0 Printing paper size: 57*26mm*6m APP name: Tiny Print