Bluetooth 2.0 Android Portable 58mm Thermal Receipt Printer POS Supports Mobile Phone & Windows for Bill, Retails StoreFeature:Long Working: Equipped with 1500mAh large-capacity rechargeable battery. Direct thermal receipt printers use thermal print head instead of ink, no ribbon or cartridge are requiredMobile Printing:Need connect the printe-r in the Phone app. Fashion mini portable design, convenient for a variety of occasions especially for outdoor working environments. Especially for outdoor working environments. 58mm receipt printer compatible with ESC / POS print instruction set. You can find this 58mm thermal printer device directly in above POS system, doesn’t matter if you can’t find it in your smartphone’s Bluetooth settingPremium Performance: 203 DPI resolution provides clear printing