Ultrasonic Doppler Fetal Monitor from JOINTO is a portable Ultrasonic Diagnostic Device, which can be used in hospital for fetal heartbeat exzamination. Basic Info. Brand Name: JOINTO & OEM Place of Origin: Changsha, China (Mainland) Sample: In charge OEM: accepted Warranty: 5 years Means of Transport: Ocean, Air, Land Features Smart, Efficient and Convenient Initiate the digital demodulation technology Automatic NST examination module Wireless Connectivity Up to 6 pregnant women can be monitored. High-capacity data storage Application Applied to constantly monitor of fetal heart rate and uterine contraction pressure of pregnant women during perinatal period.China Ultrasonic Doppler Monitor website:http://www.jointomed.com/ultrasonic-device/ultrasonic-doppler-monitor/