1. Pocket Fetal Doppler mainly applies to detect fetal heart rate for fetus of more than twelve weeks;
2. With a blue backlight LCD can display FHR, synchronous FHR signal, battery indicator, volume of sound and alarm indicator accurately; designed for darkness use; with automaticdormancy, self-detecting, and alarm function to make cautionfor abnormal FHR and low battery capacity;
3. Built-in speaker;
4. 2.0 MHz bigger handgrip probe (Waterproof probe for option);