WMS-A Pocket Fetal Doppler can meet routine examination requirement of obstetricians, midwives, and pregnant women.  It has manual mode heart rate processing mode. It has audio output, and can connect with earphone or recorder with audio input. Sonotrax has a slim, power saving and interchangeable ultrasound probe
 
Features:

Easy to use

Auto and manual counting

Built-in speaker

Automatic switch-off

Battery energy indication 

Detection: Speaker output/Earphone output ,  Manual mode, continuous operation time≥15hours