The HI Vision 5500 Digital Ultrasound System delivers the latest generation of signal processing technology, sophisticated transducer design and a host of features and options for advanced imaging performance and clinical flexibility. The HI Vision 5500 has advanced Grey Scale Imaging, image management capabilities, Windows XP, hard drive, CD Rom and USB connection. The HI Vision 5500 is compatible with all PENTAX Ultrasound Endoscopes. The EZU FS2 Dual Footswitch included.