Angelsounds Fetal Doppler

Features
All-in-one design.
3MHz ultrasonic probe for better detection of early foetal heart rate.
Transmission of sound to computer for recording.
Small and light weight with stylish design.
Specifications
Ultrasound frequency: 3MHz
Overall sensitivity (200mm from the face of the transducer): ≥ 90dB
Ultrasonic emitting power: < 10mW/cm2
Output power: < 26mW
Audio output power: < 0.2W
Power: 9V alkaline battery