2 Mhz Probe

The Grafco Ultrasound Pocket Doppler is intended for clinical use as an obstetrical or vascular monitoring tool. The unit includes a mini USB probe socket, probe detector, built-in speaker, adjustable volume, alkaline battery, and low battery detector.  Available with one of three different interchangable probes: 2MHz, 4MHz or 8MHz.The 2MHz probe is used primarily for fetal heart detection.  The 4MHz is utilized for vascular monitoring, and the 8MHz is used for superficial vascular monitoring. Features:

Compact lightweight design
Accurate detection with clear audible sound produced
Low battery indicator and volume control
Interchangeable waterproof probe
Carrying Case Included