DD-700 Vascular-Fetal Combo The DD-700 doppler provides a large, bright, back lit display of the heart rate. The display also indicates battery, volume, and signal strength status. The powerful digital processor in the DigiDop utilizes Digital Signal Clarity - DSC to eliminate background noise and amplify a strong clear signal. True auto-correlation calculates a fast, accurate pulse rate. Features: 3MHz & 8MHz - Interchangeable obstetrical and vascular probes included.Better Sound - Digital...