Baby Heartbeat Monitor Sound Amplifier FDA Approved Angelsounds Baby Fetal Doppler Prenatal Monitoring Devices for Expectant Mothers

الوصف

Specification - Working mode: Continuous wave Doppler - Ultrasonic emitting frequency: 3MHz - Ultrasonic emitting power: - Overall sensitivity at the distances 200mm from the face of the probe - Stand-by time: >4 hours - Suitable gestation: 12 gestational weeks or later, difference in pregnant mater - Power: 2 AA batteries (not included) - Operating temperature: 5 - 40°C - Operating humidity: 0 - 80%RH, non-condensing.