- Easy to use
- Accurate FHR detection and LCD display
- Built-in speaker
- Automatic switch-off
- Battery energy indication
SF40E 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.SF40E has a slim, power-saving and interchangeable ultrasound probe.