Model V4 All digital image and clear, 12 "LCD, USB storage, good appearance, standard configuration: with a convex 3.5MHz probe Model V7 Laptop, 15-inch high definition LED screen, fully digital, 8GB permanent storage, USB ports, built-in battery (can use 5 hours), 2 probe connector Standard configuration: with a convex 3.5MHz probe Laptop, 15-inch LED high definition screen, all-digital, PC-based, Multi language, management powerful information, complete application packages, 8GB of permanent storage, USB ports, compatible with laser / inkjet printers, DICOM, built-in battery (can use 3 hours), 2 probe connector Standard configuration : with a 3.5MHz convex probe, its model with the French version.