Summit Doppler Lifedop is designed to provide you with superior sensitivity and sound quality in fetal heartbeat detection as early as 6 weeks, where conventional Dopplers can only detect at the 10 to 12-week mark. With a reputation for being the first transvaginal Doppler probe in the world, the EchoHeart is perfect for saving on costly imaging procedures for high-risk pregnancies where multiple exams are required. This unit is not only economical but will provide you with a versatile audio Doppler that is unparalleled in quality.