Functions: With BT function, it supports Android, IOS and Windows, convenient for printing data from the device wirelessly. Direct thermal printer, quieter and faster operation, save energy. Efficient and transparent printing, printing speed can reach 80mm / s. The built-in 1500mAh lithium-ion battery can work continuously for up to 8 hours. Small size and light weight, easy to carry. Thermal paper size: 57*30mm (about 2.17*1.18in) for 1 roll of paper, 10 rolls in total. Technical data: Colour: orange Printing 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 - 0.10 mm Paper width: 57mm +/- 0.5mm 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 Working temperature: (-10-50)℃ Storage Temperature: (-20~70)℃ Image format support: JPG, BMP, TIF, JPEG etc. Supporting System: Android, IOS, Windows (via USB) Item Size: 12 * 7.5 * 5 cm / 4.7 * 2.9 * 2 in Product weight: 210g / 7.4oz Package weight: 640g / 22.6oz A deviation of 1-2 mm is normal. Package list: 1 * Printer 1 * USB Cable 1 * Disc 1 * User Manual (Chinese, English) 10 * Paper rolls