3.0MHz LCD Fetal Doppler Baby Prenatal Heart Rate Detector Home Sonar Doppler Stethoscope Pregnant Household Women Fetal Monitor

Fetal Doppler parameters:Probe frequency: 3.0MHzFetal heart rate measurement range: 60BPM~210BPM (BPM: beat per minute)Size: 48mm×27.5mmWeight: about 185g❀ Note1. The battery is not included, because it cannot be shipped, please pay attention!2. Please evenly spread the gel on the probe before use. (As for the gel, it is not included in the package due to transportation restrictions. But you can easily buy it in the local market. The gel has lubricity and isolates the air. You can also use aloe vera gel, essential oil instead)