80-element electronical convex array scanning with EDD and cine-loop function 7 or 10 inches monitor screen, fold-up keyboard, 4 display modes: B, B+B, B+M, M Multi-sectional dynamic focusing, T. G. C. Control, dynamic filtering, edge enhancement and frame correlation. Auto measurement of such parameters: Circumference, volume, pregnant week, fetal weight, Distance, heart rate, area etc. Display of ID number, date, time, age, sex, and hospital information, etc. Permanent image storage: 32 frames. Gray scale: 256