... 5.1 year warranty Handheld Thermal printer,Mini Bluetooth printer,Android printer (MP300) MP300 Performance Parameter Print performancePrint ... lackingSupport Overheat protectionSupport Interface parametersSerial interfaceMINI USB socket Bluetooth interfaceBluetooth Spec V2.0 + EDR compliantPower parametersDC powerDC5V ... .54(mm) Handheld Thermal printer,Mini Bluetooth printer,Android printer(MP300)