Multi-Dopplex II and Mini-Dopplex include stereo headphones, ultrasound gel, neck cord, carry pouch and user manual. The probe contains a sensitive transducer head together with sophisticated electronics to generate the Doppler sounds. Four probes are available for vascular examinations when ordering the Multi or Mini Dopplex. 4MHz transducer is used for very deep lying blood vessels; 5MHz is a general purpose probe; 8MHz is for examining peripheral/superficial blood vessels; 10MHz is used for specialist’s superficial applications where very high sensitivity is required. Latex free.