1. Built-in loudspeaker and LCD display with backlight
2. Battery status indication
3. Output for headphone
4. Auto power off
5. High sensibility can detect the pulse of 12 week fetus.
6. Power by 1.5V AA *2 PCS batteries
7. Fetal Heart Rate: 50 to 240 BPM(beat per minute)
8. Resolution: 1BPM
9. Accuracy: +/- 2BPM
10. Probe nominal frequency: 3.0 MHz
11. working frequency: 3.0 MHz+/-10%
12. FDA approval
13. Real time mode Averaged mode and Manual mode
14. Complies with IEC60601-1:2006