Features: 1.Fast Printing: The printing speed of portable receipt printer can reach 90mm/s, and the printing is efficient and clear. 2.Bluetooth 4.0:Portable printer supports Bluetooth 4.0 function, which is convenient for remote printing and supports for Android, for OS X and for Windows systems. 3.Power Saving: Receipt thermal printer has the functions of automatic sleep and automatic wake up, saving power. 4.Widely Used: Thermal printer is suitable for printing taxi tickets, management fee receipts, restaurant ordering information, etc. 5.Thermal Printing: Bluetooth receipt printer uses thermal paper to print, which is smaller and quieter, and supports smartphone control, making it easier to operate. specification:Item Type: Portable Receipt Printer Material: ABS Bluetooth Version: 4.0 Interface: Micro USB Printing Method: Thermal Printing Printing Speed: 90mm/s Resolution: 203dpi(8dot/mm) Print Width:Approx. 48mm / 1.9in(384dot) Paper Width:Approx. 581mm / 2.30.04in Life Cycle Time: 100Km Operating Voltage: DC 5V/2A Type of Battery: 2000mAh Lithium ion Battery (Built in) PackageList:1 xPortableReceiptPrinter 1 xThermal Paper 1 x Power Adapter 1 x Charging Cable 1 x User Manual NoteShipment with built in battery.