All in One PrinterPerfect tool to print PDF file, test paper, webpage, contract, photo, picture, etc. Available for 210mm/111mm (A4/4inches) thermal paper (ordinary paper cannot printed), different sizes of paper to meet your printing needs on multiple occasions. An excellent assistant for study and office work. Wide Compatibility Support IOS and Android mobile phone by bt connection. Turn on the printer by pressing the power button for 3sec first. For Mobile Device, download the APP first and enter it and connect with the machine through BT function. If you need to print with the computer, please download the driver first. Premium Printing Quality Adopts high quality print head, and uses thermal tech to print sharp & detailed pages instantly, inkless and no need of ribbon. HD printing comes true through 300DPI resolution. Portable Printer F2S printer with compact size to fit in your bag, luggage or suitcase, only 752g/26.5oz weight equivalent to a bottle of water. Free to print with just your phone, tablet or pad. Durable and Powerful Built-in 2600 lithium battery, print up to 200 full-page prints after a full , 50hrs long time standby time, excellent printer for business trip.