Detect fetal heart rate quickly and easily from early gestation through labor and delivery with Wallach's Sonicaid One Fetal Doppler. The performance and reliability of the Sonicaid One provide reassurance for clinician and mother. The unit is so small and lightweight that it's easy to transport and store. It's simple to use and it's comfortable to hold. One model meets every requirement. Higher sensitivity with wider beam coverage enables location of heart signals quickly from early gestation to full term. Fetal heart sounds are heard in excellent clarity and the large, reflective display can be easily read. The recessed buttons and memory volume control add to the unique styling and work-friendly ergonomics to create the ultimate in ease of use. Advances in materials have enabled a lighter, yet more rugged unit including the curly duraflex probe cable for increased reliability and extended product life. Over 1000 one-minute examinations and auto-shutoff mean there is no fetal heart detector with better economy.