A wearable device monitoring body conditions is disclosed. The device consists of a single or plurality transducers, particularly, ultrasonic transducers, and electronic circuitry which are packaged in a low profile patch. The electronics controls a transducer or transducers for signal transmission and receiving, data processing and wire or wireless interfacing to external devices. Laying out the electronics on a flexible printed circuit which mounted along with the transducers to a bendable material, easily adaptable to the curvature of a surface enables attaching the device to curved bodies, such as a human body, for purpose of health conditions monitoring. Low profile of the devices makes it possible to be worn a round-the-clock without causing much inconvenience for a patient. Depending on the application, the transducers can be configured as fixed or movable, providing appropriate monitoring results.
