Characteristics: With BT function, it supports Android, IOS and Windows, convenient printing data from your device wirelessly. Direct thermal printer, quieter and faster operation, energy saving. Efficient and clear printing, printing speed can reach 80mm/s. Built-in 1500mAh lithium-ion battery, can work continuously for up to 8 hours. It can be powered by a power bank. Small size and lightweight, easy to carry. Thermal paper size: 57 x 30mm (about 2,17 x 1,18inch) per 1 roll of paper, total 10 rolls. Technical data: Colour orange, Printing Method: Thermal Linear Printing BT version: 4.0 Battery: 7,4 V, 1500 mAh Charging time: 2-4 hours Standby time: 100 hours Printing speed: 50-80mm/s Resolution: 203dpi (8 points/mm) Paper Type: Thermal Paper Paper thickness: 0,05 - 0,10 mm Paper width: 57 mm /- 0,5 mm Printing width: 48 mm /- 0,5 mm Rolled paper diameter: ≤40mm Barcode type: UPC-A, UPC-E, EAN-13, EAN-8, CODE39, ITF25, CODEBAR, CODE93, CODE128, QR code, PDF417 Operating temperature: (-10-50) ℃ Storage temperature: (-20-70) ℃ Supported image formats: JPG, BMP, TIF, JPEG, etc. Support system: Android, IOS, Windows (via USB) Product Size: 12 x 7,5 x 5 cm / 4,7 x 2,9 x 2 inches Product Weight: 210g/7.4 oz Package Size: 15,0 x 14,0 x 8,5 cm / 5,9 x 5,5 x 3,3 inch Package Weight: 600g/21.2oz Note: Download the printable app before use. And open the app to connect the printer to the app via BT. Then start printing. If you want to print from your PC, first download the PC printer driver. List of packages: 1 x printer 1 x USB cable 1 x User Manual (Chinese, English) 10 x rolls of paper