Scanning mode: Convex & Linear; Display modes: B,B+B,B+M,M ; Scanning depth: 200mm ; Gray scales: 256; Cine-loop: 186 frames ; Image storage: 32 images permanently; Image magnification: ?.0,?.2,?.5,?.0; Image conversion: U/D,L/R, B/W; Local zoom: 2 times both in real-time and frozen; Frame correlation: Three levels to adjust (B、B+B mode); Electronic focuses: 4-sector dynamic; Depth scroll up in B and B+B modes; Resolution Lateral:≤2mm, axial≤1mm ; Body marks: 15 ; Measurement: Distance, circumference ,area, heart rate, FA, EFW, EDD ; Annotation: Calendar,PD, sex, age; Pseudo-color processor built-in; Video output: PAL-D; Monitor: 7 inch VGA; （10inch VGA optional ） Power Supply: 120/230V, 50/60Hz;