1.Notebook style,special backpack,lightweight and convient 2.Intelligent ports, 5 available different probes 3.Portable and trolley optional 4.7 segment intelligent STC adjustment, high resolution images 5.Low radiative 15 inch TFT LCD display 6.Great capacity of cineloop ,high definition dynamic images 7.Chinese and english operation interface. Specifications: Scanning Mode: wide frequency electronic Convex/ Linear Display Mode: B, B+B, B+M, M, 4B, 8B Scanning Depth: 220 mm Gray Scales Transformation: gamma correction Image Magnification: 1.0, 1.2, 1.5, 2.0 Monitor: 15 inch TFT LCD display Image Conversion: up and down, left and right, black and white Focusing: variable aperture for section 1,2,3,and 4 available Electronic Focuses: 4 sector dynamic ( Random Combination ) Probe FRE. Support: Convex, Linear, Micro convex, Vaginal, Rectum Resolution: Lateral less than 2mm, Axial less than 1mm Body Marks: 24 Obstetric calculation: BPD, FL, CRL, GS, HC, AD AC, and display fetus age, fetus weight, expected birth date, heart rate, slope ratio, period. Measurement: Distance, Circumference, area, heart rate, EDD, etc. Pseudo-color: 8 available colors Display: Date, Time, Name, Sex, Age, Hospital, Obstetric list, annotation, edit menu, etc. Video Output: PAL, VGA Size:280mmX240mmX210mm Net Weight: 6.5Kg.