Features: 1.Support BT 4.0 function, support for Android for iOS for Windows, convenient for data in your wireless printing device 2.High efficiency, print speed can get to 50 to 80mm/s, clear print automatic sleep, automatic wake up, power saving 3.Built in 1500mAh large capacity charging lithium battery, long time work, support smartphone control, easy operation, improve work efficiency 4.The direct thermal printer prints with thermal paper, the volume is smaller, more quiet, faster, energy efficiency 5.Taxi ticket printing, management fee receipt printing, receipt printing, restaurant order information printing and other small light, easy to go out specification:Item Type: Thermal Printer Model: D58A-2 BT Version: 4.0 Interface: Micro USB Printing Method: Thermal Printing Print Speed: 50 to 80mm/s Distance: 8dots/mm, 384dots/line Printing Width: Approx. 48mm/1.9in Paper Width: 57.5 0.5mn Volume Outer Diameter: Approx. 40mm/1.6in Cascade Inner Diameter: Approx. 13mm/0.5in Paper Thickness: 60 to 80um Life Cycle Time: 50km(Print Density is Below 12.5%) Input Voltage Current: AC 100 to 240V ~ 0.2A 50 / 60Hz Output Voltage Current: DC 5V / 1000mA Battery Type: Charging Lithium Battery (Built In) Battery Capacity: 1500mAh PackageList: 1 xThermalPrinter 1 x Data Cable 1 x Plug 1 x User Manual Note1. If the printer is not used for a long time, the battery must be removed, otherwise the battery and printer will be damaged. 2. Please select a high amount of paper. Do not store the thermal paper in a high temperature and sun irradiation area. 3. Shipped with built in battery.