Handheld & Portable Design
Compact and lightweight form factor makes it easy to carry and use anywhere — ideal for home use and travel.

Ultrasound Doppler Probe (2–3 MHz typical)
The device uses ultrasound waves (via the Doppler effect) to detect fetal heartbeat sounds. Verywell

Clear Audio Output / Speaker
Allows you to hear the fetal heart tones in real time, either through the built-in speaker or via a headphone jack.

Heart Rate Display (BPM)
Many models show the fetal heart rate in beats per minute on an LCD or digital screen.

Backlit LCD / Display Screen
Ensures readings are visible even in low light conditions.

Auto Power-Off / Energy Saving Mode
Automatically shuts down after a period of inactivity to conserve battery life.

Long Battery Life / Battery Powered
Operates on standard batteries (often AA or AAA) so you can use it without needing a power socket.

Ergonomic Grip & Simple Controls
Easy to hold and operate, with intuitive buttons for power, mode switching, volume, etc.

Probe Water / Gel Compatibility
Designed to be used with ultrasound gel or water to ensure good contact with skin and clear signal reception.

Signal Sensitivity & Noise Filter
Some models include advanced signal processing or filtering to reduce interference and improve clarity.

Data Recording / Output (optional)
Some devices allow users to record or export heartbeat audio or heart rate logs to share with healthcare providers.

Safe & Non-Invasive Design
Uses low-power ultrasound, making it non-invasive and generally safe when used correctly.