The device is suitable for use after the 12th week of pregnancy. Features:Color: Blue, pink, purple, greenThe probe and the main engine are integrated designHigh precision FHR LCD digital displayWith headphone design, mothers can listen to fetal heart sound at the same timeHigh sensitivity ultrasonic transducerLow ultrasonic output intensityLow power consumptionVolume adjustment Monitoring your baby's heartbeat: With our high-quality fetal Doppler, you can accurately monitor your baby's heartbeat. It will work from 12 weeks of pregnancy and its LCD screen shows your baby's heart rate. You can use ultrasound gel or baby oil to find your baby's heartbeat!Good battery life: Our battery-powered fetal Doppler has a modern design and uses very little power. This will allow you to carry it around with you without worrying about running out of battery!Measurement range: 50-240bpmAccuracy: ± 1% or ± 1 times / min,take a large value.Operating mode: continuous waveNominal sound working frequency: 2.5MHz.Ultrasonic output power: < 40mWThe sensitivity: >90dB, at the place 200mm away from the surface of the probeService time of battery: not less than 60 minutes.Low power indication: battery symbol flashesAutomatic switch off: no value of fetal heart rate within continuous two minutes or no key operationEnvironment RequirementsAmbient temperature: 5℃-40℃Humidity: 30%-80%Atmospheric pressure: 60kPa-110kPaStorage temperature:-20℃ - +55℃Relative storage humidity:10%-93%Dimension:117(L)×57(W)×35(H)mmWeight(without battery):80g (including battery)Power Requirements:2 AAA (No. 7) alkaline battery, 3.0VPACKAGE INCLUDES:Earphones1x Fetal DopplerUser Manual
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