The pocket fetal doppler is a handheld device that detects the fetal heartbeat (pregnancy doppler). It is specially designed for pregnant women who want to monitor the fetal heartbeat on their own daily. Pregnant women can listen to and calculate their fetus's heartbeats themselves to monitor the condition of the fetus they are carrying daily.
You can start using the fetal doppler from the 12th week of pregnancy. This device is used for simple listening.