Summary of main specifications and system of laptop 4D color Doppler color Doppler ultrasound Laptop type all digital color Doppler ultrasound host Ultrasonic host operating system: Windows7 operating system Spectrum pulse Doppler Direction energy Doppler Real time three synchronization Space composite imaging: the requirement is 3 level, visual adjustable. Organized harmonic imaging technology 4B imaging mode One key intelligent optimization Support multilingual user interface Monitor: 15 inches, high definition LED Physical clipboard: save the image on the left side of the screen, which can be deleted directly. The system has the function of on-the-spot upgrade Presupposition: for different inspection of the viscera, preset the inspection conditions for the best image, reduce the adjustment of the operation, and the commonly used external adjustment and combination regulation. Support real-time 3D imaging function Language: Chinese/English/Russian/Spanish/French/Arabic/Vietnamese/Portuguese/Indonesian The probe interface is 1