Introduction CONTEC10A Pocket Fetal Doppler adopts Doppler technology in designing, it is a hand-held fetal heart rate detection device. Measured FHR value and waveform are displayed on the LCD screen. With easy and convenient operation, it can be used in hospital, clinic for daily self-check by pregnant woman, realizing early monitoring and care for life. Fetal Doppler Baby Heartbeat Detector Portable Pregnant Baby Ultrasound Heart Rate Monitor Pocket LCD Doppler Stethoscope 3Mhz Probe With Gel Function Beautiful appearance, easy to operate Magnetic probe, compact design, convenient to use Color display screen Digits/Curve display Battery level indication Auto shutdown after no signal inputting for 60s High sensitive Doppler probe, fetal heart sound can be heard clearly for pregnancy more than 12 weeks Two sound output modes: built-in speaker and external headphone Performance Safety classification: internally powered equipment, type CF applied part Display: 1.77? LCD screen FHR measurement and display range: 50 BPM ? 240 BPM (BPM: beats per minute) Resolution: 1 BPM Accuracy: 2 BPM Rated working voltage: DC3 V Battery type: two 1.5V batteries (AA LR6) Probe Nominal Frequency: 2.0 MHz Working Frequency: 2.0 MHz 10? Negative Peak Sound Pressure: P_ ? 1 MPa Output Beam Intensity: Iob ? 20 mW/cm2 Spatial-peak Temporal-average Derived Intensity: Ispta ? 100 mW/cm2 Ultrasonic Output Power: P ? 20 mW Working Mode: Continuous wave Doppler Effective Radiating Area of Transducer: ? 208 mm2 Accessories User Manual 1pc Gel 40ml 1pc Physical characteristic Dimension: 151mm(L) 96 mm(W) 33 mm(H) Weight: about 207g (with batteries)