2Mhz/3Mhz/8Mhz Probe for Fetal doppler Sonoline C1/C, FD300, FD320 Frequency:3Mhz With the headphone jack and

With the headphone jack and included recording cable

} The Angelsounds FL100C/JPD-100B Plus Professional Fetal Doppler is a highly sensitive doppler that can detect fetal heartbeat audio and FHR as early as 12 weeks in pregnancy

a battery status indicator

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The FD320 has three working modes: real-time FHR display mode

2Mhz/3Mhz/8Mhz Probe for Fetal doppler Sonoline C1/C, FD300, FD320 Frequency:3Mhz With the headphone jack andThese probes Sensors works with Sonoline C1 C, FD300 and FD320 Fetal Doppler. We have 2Mhz probe, 3Mhz probe, 8Mhz vascular probe. The 2Mhz 3Mhz probe could be used to hear your baby's heart beat. The 8Mhz probe are vascular Probe. If you want to hear your baby's sound movement, please choose 2Mhz 3Mhz probe. A 3MHz probe is recommended to detect a heart rate in early pregnancy (8 10 weeks gestation). A 3 MHz has also been proven to work well