A Fetal Doppler is a handheld device that uses sound waves to detect the fetal heartbeat. It is a type of ultrasound that uses a transducer to send out sound waves and then listen for the echoes. The echoes are then converted into an audible sound that you can hear.Fetal Dopplers are often used by pregnant women to listen to their baby's heartbeat at home. They can also be used by healthcare professionals to monitor the fetal heartbeat during pregnancy and labor.There are many different types of Fetal Dopplers available on the market. Some are simple and easy to use, while others have more features and options. When choosing a fetal Doppler, it is important to consider your needs and budget.