This fetal doppler has following features

 

1.       Display fetal heart rate digitally

2.       While power on, no background sound without signal in 10seconds

3.       Hand-held humanized design, easy to transport

4.       Optional 2 or 3 MHz Doppler probe, detect precisely

5.       Built-in speaker with adjustable volume allowing you to hear fetal heart sound

6.       Built-in rechargeable battery with indicator