The pregnant mother can operate the baby Doppler by herself to hear the fetal heart rate and calculate the fetal heart rate， so as to achieve the purpose of pre-monitoring and fetal care.
0 radiation， giving a sense of security.
One-piece， compact and portable.
Pulse wave front technology and chip pulse wave technology make the fetal heart meter have high range resolution.
Digital filtering noise reduction technology makes fetal heart sounds smoother and clearer， and listens to the baby's real heartbeat.
<p><b>Features:&nbsp;&nbsp;&nbsp; &nbsp;</b></p> <p>High sensitivity probe， no radiation， low-ultrasound power， safety and with high accuracy.&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Large LED display， you can see the fetal heart rate， battery capacity， and volumes clearly.&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Equipped with volumes adjustable function， you can adjust the volumes easily according to your demands. </p> <p>After hearing a recognizable， rhythmic fetal heart rate sound， keep the probe stationary for at least 5 seconds so that the device can measure and display the fetal heart rate correctly.&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Powered by two sections of AA battery， support continuous operation.(battery is not included)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;</p> <p><b>Note:&nbsp;&nbsp;&nbsp; &nbsp;</b></p> <p>The normal fetal heart rate r-ange is 120-160bpm.&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>100-120bpm and 160-180bpm are critical intervals， which should be paid attention to.&nbsp;&nbsp;&nbsp;&nbsp; The value below 100bpm and above 180bpm should be high concerned.&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Specifications:&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Name: Fetus-voice Meter&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Material: ABS&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Color: white&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Earphone: 3.5mm 32 Mono -or dual-channel headphones&nbsp;&nbsp;&nbsp;&nbsp; Ultrasonic-operating frequency: 2.5MHz&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>The deviation between the ultrasonic-working frequency and the nominal ultrasonic-working frequency: should not be more than ±15%&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Overall sensitivity: 290dB (At a distance of 200mm from the probe surface， the comprehensive sensitivity)&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Fetal heart rate measurement and display-range: should not be less than 65-210BPM&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>The speed of sound: 1520- 1620m/s&nbsp;&nbsp;&nbsp;&nbsp; <br></p> <p>Acoustic impedance: 1.5- 1.7 x 106 Pa.s/m&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Acoustic attenuation : &lt; 0.05dB/(cm.MHz)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Working environment:&nbsp;&nbsp;&nbsp;&nbsp; Temperature: 5°C-40℃&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Relative humidity : 25-80% RH&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Atmospheric pressure: 70kPa-106kPa2&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Storage and transportation: Temperature: 5℃-45℃&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Relative humidity: 9-85% RH&nbsp;&nbsp;&nbsp;&nbsp; Atmospheric pressure: 50kPa-106kPa&nbsp;&nbsp;&nbsp;&nbsp; Viscosity: &gt;15Pa.S&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>PH value: 5.5-8&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Service altitude &lt;2000m&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Package size: 170 * 115 * 50mm / 6.69 * 4.53 * 1.97in&nbsp;&nbsp;&nbsp; &nbsp;</p> <p>Package weight: 160g / 5.64ounce&nbsp;&nbsp;&nbsp; &nbsp;</p> <p><b>Packing List:&nbsp;&nbsp;&nbsp; &nbsp;</b></p> <p>1 * Fetal Doppler&nbsp;&nbsp;&nbsp;&nbsp; 1*Clear Ultrasound Gel 60g&nbsp;&nbsp;&nbsp;&nbsp; 2*Battery&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1 * Guideline</p>