Features: *Scanning modes: Electronic linear, convex, micro-convex *Scanning frequency: 2.5MHz-10MHz(broadband, depends on probe) *Display modes: B, B+B, B+M, M *Resolution: Lateral ≤2, longitudinal≤1 *Exploration depth: 220mm *Gray scales: 256 grades *Monitor: 10.5inch LCD *Magnification: 4-step *Image reversal: White-black and left-right reversal *Dynamic imaging: Variable aperture, focus choosable, multistep dynamic focusing, acoustic lens focusing. *Body mark: More than 10 kinds *Depth shift: Enlarging promotion real time *Measurement: Distance, circumference, area, heart rate, slop, pregnant weeks, fetal weight *Display: Time, date, patients'ID, name, hospital name, probe frequency, frame frequency and suggestions of other information *Video output: PLA, VGA *Standard configuration: Main unit, 3.5MHz high density broadband probe of electronic convex array, colored software system, image memory and playback, local zoom *Weight: 3Kgs Optional function 1. Software systems of other probe 2. Convex, linear, trans vaginal probe.