... for choose. Pocket size, movable,fast print. Bluetooth thermal printer,portable wireless printer is a mall, lightweight mobile receipt printer ... to 80 mm/s ; various interfaces; serial, IR, USB & bluetooth; long lasting li-ion battery ( 7.4V, 1500 mAh ), battery ... adapter, li-ion batteryOptional accessoriesSerial cable / leather coat Portable bluetooth printer,support QR code,SDK free opened!