This Siemens Px4 1 Probes is the best type of ultrasound available on the market. It has many excellent features and offers streamlined, intuitive features that are better that your typical ultrasound. Yet, it is compact and easy to use for the average person to use. As a robust ultrasound, it delivers the best features to capture your attention for all types of use. Compare Siemens Px4 1 Probes with Philips, Biosound, Siemens, Sonosite, Toshiba, Terason, Acuson, GE.