Backlight keyboard, 3.5MHz Convex abdomen probe Cine loop system Pseudo color image output Partial Zoom function Light weight of 1.5kg, 2cm for thickness, 17cm for width, 25cm for length, very convenient for doctors to carry out. U Disk for upgrade. Dismountable battery. Connect with Jet printer, Laser printer to print directly. Other performance is as the same as the laptop computer, such as power save mode, touch pad and so on.