N. J. International corporation is offering mini doppler. The company is the exporter and importer of laboratory and scientific, hospital / medical / surgical products for the needs of hospitals, research labs, clinics, and educational institutes, etc. The mini doppler is a system to carry put fetal, vascular and arterial investigations and monitoring. The mini doppler has three interchangeable transducers, 2 mhz, 4 mhz, and 8 mhz. Some salient features of this mini doppler are as follows: