Top quality on sale  baby fetal ultrasound doppler

Features:
Portable Fetal Doppler mainly applies to detect the fetal heartbeat rate from the twelfth week.
Built-in rechargeable battery can work continuously more than 6 hours,LED can display FHR;
Alarm function when FHR is out of the normal range or battery power is in shortage;

Automatic power off ( 3 minutes )
Built-in speaker and collocated with earphone jack;
2.0MHz probe,Optional 5.0MHz probe for blood stream. 

Specifications:
Executive Standard: EN61266: 1995
Ultrasonic frequency: 2.0MHz±10%
Ultrasonic intensity: ≤10mW/cm2
Comprehensive Sensitivity: ≥90dB
FHR range: 60-210bpm(±2bpm)
FHR alarm range: ≤100bpm  or  ≥170bpm
Isptp: ≤0.1MPa
Battery: 14.4V/1600mAh Ni-MH rechargeable batteries
Adapter input voltage: AC 110V±10% 60Hz / 220V±10% 50Hz
Rechargeable battery input voltage(no load): DC 24V±1V
Maximum audio output intensity: ≤2W
Doppler frequency: 100--3000Hz
Static continuous working time: ≥6h
Working temperature: 10-40°C 
Humidity: ≤80%
Atmospheric pressure: 86--106kPa 

Normative collocation: charger, operation manual, approval certification, warranty card