Features: With BT function, supports Android, IOS and Windows, convenient for you to print data from your device wirelessly. Direct thermal printer, more quiet and fast working, saves energy.Efficient and clear printing, print speed can reach to 80mm/s. Built-in 1500mAh rechargeable lithium-ion battery, can work continuously up to 8 hours. It can be powered by power bank. Small size and lightweight, easy to carry. Designed for outdoor working, such as printing taxi bill, parking bill, express delivery invoice, restaurant ordering, ticket selling and so on. Thermal Paper Size: 57*30mm(about 2.17*1.18in) for 1 paper roll, 10 rolls in total. Specifications: Color: Blue Print Method: Thermal line printing BT Version: 4.0 Battery:7.4V, 1500mAh Charging Time: 2-4 hours Standby Time: 100 hours Print Speed: 50~80mm/s Resolution: 203dpi ( 8dots/mm ) Paper Type: Thermal Paper Paper Thickness: 0.05 – 0.10mm Paper Width: 57mm +/- 0.5mm Print Width: 48mm +/- 0.5mm Rolling Paper Diameter: ≤40mm Barcode Type: UPC-A, UPC-E, EAN-13, EAN-8, CODE39, ITF25, CODEBAR, CODE93, CODE128, QR code, PDF417 Working Temperature: (-10-50)℃ Storage Temperature: (-20~70)℃ Supporting Image Formats: JPG, BMP, TIF, JPEG, etc. Supporting System: Android, IOS, Windows (through USB) Item Size: 12 * 7.5 * 5cm/ 4.7 * 2.9 * 2in Item Weight: 210g/ 7.4oz Package Size: 15.0 * 14.0 * 8.5cm / 5.9 * 5.5 * 3.3in Package Weight: 593g / 20.9oz Note: Please download a printing app before use. We recommend you the app “dlabel”which can be downloaded on app store/google. And open the app to connect printer with app via BT. Then start printing. If you want to print by computer, first download the printers PC driver.The driver download link: https://www.xmjprt.com/2457747-2457747.html Contact us for more support if needed. Package List: 1 * Printer 1 * USB Cable 1 * User Manual (Chinese, English) 10 * Paper Rolls More offers, more surprises