The ChoiceMMed MD800 fetal doppler is a handheld device used by healthcare professionals or expectant parents to listen to the fetal heartbeat during pregnancy. It works by emitting and receiving high-frequency sound waves that bounce off the fetal heart, producing a sound that can be heard through the device's built-in speaker.

The fetal doppler is compact and lightweight, making it easy to carry and use. It features a clear LCD screen that displays the fetal heart rate, and also includes a headphone jack for private listening. The device is battery-powered and can be used anywhere, making it a convenient tool for monitoring fetal health during pregnancy.

The ChoiceMMed MD800 fetal doppler is FDA-approved and has been shown to be safe and effective for use during pregnancy. However, it is important to note that the fetal doppler is not a medical device and should not be used as a substitute for regular prenatal care. Any concerns or questions regarding fetal health should be directed to a healthcare professional.

Overall, the ChoiceMMed MD800 fetal doppler is a reliable and easy-to-use tool for listening to the fetal heartbeat during pregnancy. It can provide expectant parents with a sense of reassurance and help healthcare professionals monitor fetal health throughout pregnancy.

This Heartbeat earphone is suitable for use after the 12th week of pregnancy. It gives you peace of mind and comfort for the rest of the 28 weeks! 

-Small, portable and easy to operate
-Digital audio processing technology, can hear fetal heart sound more clearly
-TFT screen displays fetal heart, fetal heart rate curve, volume, batery status/ LCD displays FHR, volume and battery status
-TFT screen displays two measruing modes: digit mode, curve mode, could more understand baby's heart rate
-Fetal monitoring medical algorithm meets the hospital clinical requirements
-High sensitive ultrasound probe with 3.0MHz and 2.0MHz (optional)
-Support 3.5mm headphone