FD-100 Digital Fetal Doppler Ultrasound Sound Baby Heartbeat Detector Monitor LED Digital Prenatal Pocket Fetal Doppler Stethoscope (Blue)

Features
1. Battery status indicator.
2. Check the battery at low power.
3. Built-in speaker.
4. Headphone output.
5. The probe can be changed.
6. Probe inspection.
7. Backlighting.
8. Automatically shut down.
9. 2xAAA1.5v alkaline are available and can work for no less than 10 hours ((excluding battery)
Packaging and transportation
1 x fetal Doppler
1 x English manual
1XHeadphone line