DMAX DM-201B bluetooth barcode scanner has 2.4 GHz wireless and USB cable two connection modes, mini USB receiver and USB cable, plug and play, most advanced 32 bit duplex ARM+DSP digital signal processing technology, 256 KB internal memory, more than 2600 data strings, reading without a connection, 1800 mAh li-ion battery, USB 2.0 port, designed to survive from fall height of 5 feet / 1.5 meter, sound and LED indicator.