Feature:1. Enhance Your Convenience: This compact printer, measuring 290 x 90 x 55 mm, is ideal for business travel, school, and more. It comes with a dedicated app that offers a wealth of templates, patterns, and icon materials, allowing you to edit and print your files, pictures, posters, lists, etc., on the go.2. Versatile Printer: This all-in-one printer is capable of printing anything you need, from PDF files and test papers to webpages, contracts, photos, and pictures. With a built-in paper bin, it\u0027s perfect for printing large volumes of paper during business trips. It\u0027s an excellent tool for study and office work, offering inkless printing that eliminates the need for ribbons.3. Adjustable Printing Size: This printer comes with a clip to adjust the paper width, allowing you to print on 56mm/77mm/107mm/210mm/216mm(2in/3in/4in/8in/8.5in) and US letter thermal paper. It\u0027s perfect for printing documents, daily plans, memos, and more.4. Robust \u0026 Long-Lasting: It features a built-in 2550mAh large capacity lithium battery, capable of printing about 2.5hrs after a full charge. The premium print head can run up to 50km, durable to use for a long time.5. Flexible Connectivity: This printer supports both wireless and wired connections. You can connect it to your mobile device via Bt and use the \"Luck Jingle\" app available on the App Store (iOS) or Play (Android). It can also be connected to a PC or computer with USB cable for printing.Specification:Model: A81Printing mode: Row heat sensitivePrinting speed: 10 mm/s (maximum)Input power: 5V 2AMachine size: 290 x 90 x 60 mmWeight: 756gPaper type: Thermal PaperPaper Width: 56mm/77mm/107mm/210mm/216mm(2in/3in/4in/8in/8.5in) , US LetterEffective Printing Width: 211.5mm (paper width: 216mm), 208mm (paper width:210mm)Instruction format: YPLGraphic printing: SupportCommunication interface: USB / BT2.0 & BT4.0System: for Win, for OS, for Android, for iOSBattery: 7.4V, 2550mAhCharging Time: 3-4hrsDischarging Time: about 2.5hrsOperating temperature (): 0 ~ +40Working humidity: 30% ~ 85% RH (no condensation)Storage temperature (): -20 ~ +60Storage humidity: 10% ~ 90% RH (no condensation)Package Size: 31x10x12.2cm/12.2x4x4.8inPackage Weight: 1034g/36.5ozNote:1. To prevent the printer from overheating, please place the printer in a cool and ventilated place2. If the printing is incomplete, please check whether the paper selection is correct3. The printer can only be connected through the mobile phone APP program.Package List:1 x Thermal Printer1 x Thermal Paper Roll1 x Charging CableNote:1. . To prevent the printer from overheating, please place the printer in a cool and ventilated place2. If the printing is incomplete, please check whether the paper selection is correct3. The printer can only be connected through the mobile phone APP program