3MHz Pocket Prenatal Fetal Doppler LCD Display Curves & numbers Baby Heart Rate Monitor fetal heart stethoscope External Sound

3MHz Pocket Prenatal Fetal Doppler LCD Display Curves&numbers Baby Heart Rate Monitor fetal heart stethoscope with External Sound   Highly sensitive Doppler waterproof probe. LCD high-definition digital large screen. Curves & numbers One-click switching. Intelligent noise reduction, clear sound quality. Low power, no radiation. Intelligent dynamic detection. Support 3 counting modes, real time, average, manual. 60 seconds without any operation will automatically shut down, super power saving   Specification: Power: 2 x AA battery (Battery NOT included) Ultrasound frequency: 3MHz FHR Measuring range: 30~240bpm FHR accuracy: ±2bpm Power consumption: <1W Net weight: 200g Size:130mm*100mm*36mm   Packing list 1pcs X 3MHz Pocket Prenatal Fetal Doppler 1pcs X Doppler Probe 1pcs X User Manual Gift:1pcs X ultrasonic couplant              Shipping   Items are shipped from China using Airmail, reach most of the countries within 15 to 39 business da