Feature:1. Bluetooth Printer: Pocket thermal printer, small and lightweight, easy to use and carry, supports Bluetooth connection, suitable for iOS and for Android smartphone system, without the need for any toner, ribbon, or ink.2. Multiple Types: The APP provides a variety of template options, including labels, lists, messages, various material themes such as Christmas, Easter, Thanksgiving, and many daily line drawing materials.3. Applicable Scope: The ink free printer can be used to print black and white photos, pictures, memos, shopping lists, study or meeting notes, work plans, web pages, etc., suitable for home, office or school use.4. Work Parameter: This printer has excellent print head that can print 57mm (width) x 30mm (roll diameter) thermal paper, with a resolution of 200DPI and a speed of 40mm/s, high efficiency and low power consumption.5. Built in Battery: This wireless thermal printer has a built in 1000mAH rechargeable lithium battery, which can be used for 15 hours on a single charge, making it convenient to use anytime, anywhere, compact and practical.Specification:Item Type: Mini Thermal PrinterBattery: 1 x 1000mAh Rechargeable Lithium Battery (built in battery)Printing Specification: 200dpiPrinting Speed: 40mm/sApplicable Printing Paper Specification: 57mm / 2.2in (width), 30mm / 1.2in (diameter)Connection Method: Bluetooth 4.0 or AboveAPP Support System: For Walkprint APP, for Android and for iOS system.Package List:1 x Host1 x USB Cable1 Roll x Thermal Paper (Built Into Host)1 x User Manual