Product introduction: Body mark: 16kinds body mark with probe direction Probe socket: 2 sockets, automatically identify the probe Scanning mode:B、2B、4B 、B/M、M Gain:0~127dB Dynamic scope:27~100dB,visible & adjustable Gray: 256 Cine loop:256 frames Frame frequency:126 frames/s Measurement and analysis:distance, circumference, area(trochoid or ellipse), volume, angle, Stenosis(length, area), etc.Obstetric measurement and analysis: BPD, CRL, GS, FL, HL, TAD,TBD, APBD, HC, AC, Standard configuration: Standard probe:3.5MHz convex multi-frequency probe Optional probe:6.5MHz intra-vaginal frequency conversion probe. 7.5MHz frequency conversion probe.