Standard Unit: Main unit 2.5 / 3.5/ 5.0MHz convex variable array probe 4.0-12.0MHz high-frequency linear probe 17 inches color monitor B ultrasound image work station. Optional: 2.0-5.0 MHz heart probe 6.0-7.5MHz multi-frequency vaginal probe Rectal probe 128 frame cine memory Image recorder B ultrasound image work station and etc.