echOpen O1 is a clinical ultrasound probe for obtaining ultrasound images of organs, vessels and other internal anatomical structures, for diagnostic guidance. It can also be used as a procedural aid - for example, to locate an organ or vessel prior to catheter insertion - and can be used on patients of any age, without irradiation or invasive procedures. The probe is suitable for use by doctors in a wide range of specialties: general medicine, internal medicine, occupational medicine, private practice, hospitals, emergency services, specialists, etc.echOpen O1 is used with a mobile application that controls the probe, visualizes images, records and stores them.