Functions: With BT function, it supports Android, IOS and Windows, convenient for printing data from your device wirelessly. Direct thermal printer, quieter and faster operation, save energy. Efficient and clear printing, printing speed can reach 80mm/s. Built-in lithium-ion battery with a capacity of 1500mAh can work continuously for up to 8 hours. Small size and light weight, 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: Color: Orange Printing Method: Thermal Line Printing BT version: 4.0 Battery: 7.4V, 1500mAh Charging time: 2-4 hours Standby time: 100 hours Printing Speed: 50-80mm/s Resolution: 203dpi (8dots/mm) Paper Type: Thermal Paper Paper thickness: 0,05 - 0,10 mm Paper width: 57 mm /- 0,5 mm Print Width: 48mm /- 0,5mm Paper roll 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) ℃ Support image formats: JPG, BMP, TIF, JPEG, etc. Supporting System: Android, IOS, Windows (via USB) Product Size: 12 x 7,5 x 5 cm / 4,7 x 2,9 x 2 in Product Weight: 210g / 7.4oz Package Weight: 640g / 22.6oz A deviation of 1-2 mm is normal. List of packages: 1 x Printer 1 x USB Cable 1 x Drive 1 x User Manual (Chinese, English) 10 x Paper Rolls