Fetal doppler(2mhz) fd-2000k Product information Fetal doppler-2000k handheld doppler can meet routine examination requirement of obstetricians, midwives, and pregnant women. It is a high performance model with fhr digital lcd Display. It has three heart rate processing modes:real-time fhr display mode, averaged Fhr display mode and manual mode. Both of the models have audio output, and can connect with earphone or recorder with audio input. Fd-2000k has a slim, power saving and interchangeable ultrasound probe. Fetal doppler(2mhz) feature: 1.Easy to use 2.Accurate fhr detection and lcd display 3.Auto and manual counting 4. Built-in speaker 5.Automatic switch-off 6. Battery energy indication