All DigiDop vascular probes provide the sensitivity and reliability you need. All probes will work on all DigiDops for maximum versatility. Our 5 and 8 MHz vascular probes work in conjunction with our digital DigiDop to optimize sounds for each probe. The main unit recognizes what probe is in use and automatically adjusts, frequencies and gains to provide you optimal listening experience. All our vascular probes have a smooth contour design that is comfortable to hold, comfortable for the patient, and easy to clean.