... , Java, Android OS. Bluetooth, USB and RS232 (NFC solution) portable printer/thermal printer/bluetooth printer (NFC solution) portable printer/thermal printer/bluetooth printer Features: n ... thickness0.06 to 0.08mmCharacter setAlphanumeric/ Chinese KanjiInterfaceUSB, RS-232,Bluetooth (optional)Data bufferUp to 5K bytesPower Adapter9V DC/2ABattery Power7.4V ...