Specifications: Color: Orange, Blue (Optional) 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 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 printer's PC driver. The driver download link: http://www.xmjprt.com/2457747-2457747.html Contact us for more support if needed. Package List: 1 * Printer 1 * Type-C Cable 1 * User Manual (Chinese, English)