1.With BT function, supports Android, IOS and Windows, convenient for you to print data from your device wirelessly.2.Direct thermal printer, more quiet and fast working, saves energy.3.Efficient and clear printing, print speed can reach to 80mm/s.4.Built-in 1500mAh rechargeable lithium-ion battery, can work continuously up to 8 hours5.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.Print Method: Thermal line printingBT Version: 4.0Battery:7.4V, 1500mAhCharging Time: 2-4 hoursStandby Time: 100 hoursPrint Speed: 50-80mm/sResolution: 203dpi ( 8dots/mm )Paper Type: Thermal PaperPaper Thickness: 0.05 - 0.10mmPaper Width: 57mm +/- 0.5mmPrint Width: 48mm +/- 0.5mmRolling Paper Diameter: less than equal 40mmBarcode Type: UPC-A, UPC-E, EAN-13, EAN-8, CODE39, ITF25, CODEBAR, CODE93, CODE128, QR code, PDF417Working Temperature: (-10-50)Storage Temperature: (-20-70)Supporting Image Formats: JPG, BMP, TIF, JPEG, etc.Supporting System: Android, IOS, Windows (through USB)Size:10 * 7.5 * 4.5cmMaterial:ABSColour:bluePackage Contents:1 * Printer1 * USB Cable1 * User Manual (Chinese, English)Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.