XP-420B THERMAL BARCODE PRINTER XP 420B 110MM / A6 USB BluetoothXP-420B THERMAL BARCODE PRINTER XP 420B 110MM / A6 USB BluetoothXP-420B THERMAL BARCODE PRINTER XP 420B 110MM / A6 USB BluetoothXP-420B THERMAL BARCODE PRINTER XP 420B 110MM / A6 USB BluetoothXP-420B THERMAL BARCODE PRINTER XP 420B 110MM / A6 USB Bluetooth