... M- or B/M- mode, four kinds of sweep speed of image display, 2s 4s 6s and 8s, are ... preamplifiers, logarithmic compression etc.4. It supports the measurements of distance, circumference, area, volume and fetal weight, ... due date, heart rate etc. It supports the measurements of distance, circumference, area, volume, heart rate, heart ... , date, time, image format etc. handheld ultrasound scanner with CE