Main Features: Exquisite and lightweight structure, easy to carry.Low noise and high-speed printing .Equipped with large capacity rechargeable lithium battery 7.4V, 1500mAh.Support the client local program upgrade Equipped with Windows computer side drive.Bluetooth host function It can be used for 5 - 7 days after fully charged. The indicator light will be bright when it is charging and the light will be off when it get fully charged Plug Type:US Plug,it applies to Canada, India, Japan, Mexico, Thailand, the United States, the Philippines and so on. Detailed specification: Print method: Thermal Line Printing Effective printing width: 78 mm The density of 8 / mm, 384 point / line Printing character: ANK: 8 x 12, 16 x 24 GBK: 16 x 24, 24 x 24 Characters per line ANK: 48, 32 GBK: 24, 16 Paper type: Thermal label paper Paper width: 80mm Roll diameter: 40 mm Roll core diameter of 15mm (minimum) Paper thickness: 0.12mm Print head life: 50 kilometers Barcode 1-D: UPC-A, UPC-E, EAN-13, EAN-8, CODE39, ITF25, CODABAR, CODE93, CODE128 2-D: QR Code Instruction set: ESC / POS Power supply: AC100-250V / 1.0A Working temperature: -10 - 50 Deg.C Storage temperature: -20 - 70 Deg.C Work humidity: 20 - 85 percent Storage humidity: 5 - 95 percent Model: MTP - 3 Print speed: 90mm / s Product size: 11.60 x 12.30 x 5.40 cm / 4.57 x 4.84 x 2.13 inches This printer work with the most of android app. But if you want to use your own app, we supply SDK for you to program it. If you don't know how to program it, we suggest you use android. Color: black + blue material: plastic Packing Contents: 2 x MTP - 3 Mini 80mm Bluetooth Thermal POS Printer 2 x Rechargeable Battery 2 x Roll of Paper 2 x Power Adapter 2x Printer Cover 2 x USB Cable 2 x Bilingual User Manual in English and Chinese 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