MD800A Ultrasonic Fetal Doppler is a high performance fetal heart beat detector with LCD screen displaying fetal heart waveform, which can meet routine examination requirements of obstetricians. It is applicable for the private obstetrician's office, antenatal clinic, obstetrical department of hospital and remote monitoring situations, or using at home. Accurate Measurement Professional Guarantee 1. Lightweight and Easy-To-Use; 2. 2.0 inch LCD screen displays FHR value, Fetal heart waveform, Volume, Battery status; 3. Three measuring modes: Real-time, Average and Manual Counting; Innovational Design Exhibit Quality 1. Built-in speaker and sound output interface; 2. High sensitive ultrasound probe with 3.0MHz 2.0MHz(optional); 3. Detection and Indication of probe off; 4. Adjustable brightness & Volume; Ultra-long Standby and Portable 1. Low power indicator; 2. Automatic power-off;