A100D Baby Heartbeat Doppler is a high performance fetal heart beat detector with color OLED displaying FHR curve,Website:http://www.aeonmmed.com, which can meet routine examination requirements of obstetricians. It is applicable for the private obstetrician's office, antepartum clinic, obstetrical department of hospital and remote monitoring situations, or using at home.Features1. Lightweight and Easy-To-Use. 2. Color OLED display FHR value, FHR intensity, speaker volume, battery capacity indicator, working mode, frequency of the probe and FHR synchronization symbol. 3. Accurate FHR detection. It has FHR mode, Average FHR mode, manual count FHR mode and Count-down FHR mode.4. Detection and Indication of probe off. 5. Improper FHR alarm value adjusted. The blinking FHR mode and count-down FHR mode.6. Turn to power saving mode automatically without signal within 30 seconds. 7. Auto shut off without signal within 2 minutes. 8. Earphone port support FHR sound output to earphone or recorder 9. Standard 9V alkaline battery is available for power supply, which can support 300 minutes continuous work. SpecificationFHR:Ultrasound Frequency:  2.0MHzIntensity : 5mW / cm2 or lessFHR Range: 60-210bpmFHR Range for manual count mode: 30-250bpmFHR Accuracy: ±1bpmDisplay: Color OLED displays FHR value, FHR intensity, speaker volume, battery capacity indicator, working mode, frequency of probe and FHR synchronization symbol.