Since 1976, Imex has designed and manufactured Doppler systems in the USA for fetal-heartbeat and peripheral blood-flow monitoring. Its configurable Elite and Pocket Dop II handheld units use interchangeable obstetric and vascular probes, including a waterproof option for underwater labor and delivery, while the CT+ brings the same flexibility to a portable countertop format. Imex says its Dopplers are trusted by medical professionals worldwide and backs them with a 10-year limited warranty.