Features:
Pocket Fetal Doppler mainly applies to detect the fetal heartbeat rate from the twelfth week;

Built-in rechargeable battery can work continuously more than 8 hours;

Only 270g, Can be carried conveniently with a gallus;

Built-in speaker and collocated with earphone jack;

2.5MHz probe and easy to replace,optional 5.0MHz probe for blood stream.

Specifications:
Executive Standard: EN61266: 1995

Ultrasonic frequency: 2.0MHz±10%

Ultrasonic intensity: ≤10mW/cm²

Comprehensive Sensitivity: ≥90dB

Isptp: ≤0.1MPa

Battery: 9V dry battery (optional for 9V Ni-MH rechargeable batteries and charger)

Adapter input voltage:  AC 110V±10% 60Hz / 220V±10% 50Hz

Maximum audio output intensity: ≤1 W

Static continuous working time: ≥3h

Working temperature: 10-40℃ 

Humidity: ≤80%

Atmospheric pressure: 86--106kPa