Do the cuffs have a built-in Doppler, or is a Doppler required?Updated 2 months ago

No, the cuffs do not come equipped with a Doppler device. The cuffs utilize a pressure sensor (very similar to a blood pressure cuff). The pressure sensor can detect arterial oscillations (put simply, blood flow). This information is used to derive your limb occlusion pressure. This largely eliminates the need for a Doppler device.