Features: Convenient for Your Life: With compact size - 27.5x11x6cm, great for carry to business travel, school etc. Free to edit and print in your mobile, independently developed App provides plenty of Templates and patterns and icon materials for you to edit your file/picture/poster/list, etc. All in One Printer: Perfect to print anything you want, PDF file, test paper, webpage, contract, photo, picture, etc. Wireless to print loads of paper during business trip, an excellent assistant for study and office work. Inkless printing without ribbon. A4 Printing Size: Available to print 210mm and 110mm thermal paper, excellent to print documents, daily plan, memo and so on. Powerful & Durable: Built in 2600mAh large capacity lithium battery, can print 200 sheets of A4 paper after a full charges; Each ribbon roll can print 45 sheets of A4, no need of frequent replacement. Wireless & USB Printing: Support connect with mobile device by bt function, Scan the QRcode on the manual to download the APP, convenient you to edit your file/picture/poster/list, etc. And you can download driver and connect with pc or computer by bt function or USB connect for printing, easy to operate. Specification: Mode: A4BT Print Method: Thermal Printing Resolution: 203dpi Paper Type: A4 Thermal Paper（with tailor line） Print Width: 210mm( roll paper) Tearing Paper Way: Hand movement Power Supply: DC 5V 2A Lithium Battery: Built- in 2600mah Communication: BT 4.0 2.0/USB(Type-c), windows System Color: White Material: ABS Printer Size: 27.5x11x6cm Printer Weight: 1.12KG Printer Package Size: 34.5x15x10.5 cm/13.5x5.9x4.1in Package Weight: 1490g/52.6oz Note: USB connection is support Windows system only. Packing List: 1 x A4 Thermal Printer 1 x A4 Paper Roll 1 x USB Cable 1 x User Manual