Details: USB Interface:This product is equipped with a USB interface,and it can be charged by rechargeable batteries and be used without interruption at any time to improve your work efficiency and save time. Detachable Battery:This product uses a 2000mA detachable battery,which can be easily carried and used longer.The lithium battery can standby for 2-3 days after a full charge, which can avoid frequent charging. Error Indicator:The error indicator lights up when the product is out of thermal paper or has a fault,which is convenient for you to better observe the status of the product. Sharp Paper Outlet:The product's paper outlet is distributed with sharp and dense serrations,making it more convenient to tear thermal paper and avoiding damaging them. Power Display:You can know the remaining power through the power display on the product to charge in time and avoid running out of power during use.   Specification: Model:POS-8003DD Color:Black Material:ABS,Plastic Shape:Square Voltage:110V Power:13.5W Plug:American Standard Power Type:Plug-in,Build-in Lithium Battery Instruction Set:ESC/POS Battery Specifications:7.5V DC/2000mA Power Supply:9V/1.5A Paper Type:Thermal Paper Connectivity Technology:USB,Bluetooth Compatible Devices:PC,Laptop,IOS,Android Recommended Uses:Office,Home Printer Output:Monochrome Printer Media:Receipt Resolution:203DPI Print Head Service Life:100km/328083ft Effective Print Width:72mm/2.83inch Available Paper Width:80mm/3.14inch Printing Speed:<90mm/s (3.54inch/s) Working Temperature:-10～50℃/14-122°F Net Weight:0.29kg/0.64lbs Gross Weight:0.55kg/1.21lbs Product Size:11.3*10.9*5.2cm/4.45*4.29*2.05inch Package Size:21*12*6.5cm/8.2*4.7*2.5inch Package Included: 1* Receipt Printer 1* Thermopaper 1* Power Adapter 1* USB Cable