








Heartbeat Harmony Fetal Monitor – 3MHz Probe with LCD & Audio
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Heartbeat Harmony Fetal Monitor – 3MHz Probe with LCD & Clear Sound
Stay connected with your baby's heartbeat using the Heartbeat Harmony Fetal Monitor. This device expertly merges a sensitive 3MHz probe, an easy-to-read LCD display, a built-in speaker, various measurement modes, and the convenience of battery operation.
With a measurement range of 50–240 BPM, 1 BPM resolution, ±2 BPM accuracy, versatile 3MHz probe, three monitoring modes, backlit LCD, integrated speaker, and an automatic power-off feature, this portable fetal monitor delivers essential fetal heart-rate insights when utilized properly and in accordance with the provided guidelines.
Bright Backlit LCD Display
Easily access vital fetal heart-rate information on the user-friendly LCD screen.
The 45 × 25mm backlit LCD is crafted for outstanding clarity, even in dimly lit settings.
3MHz Fetal Doppler Probe
The Heartbeat Harmony features a 3MHz probe engineered to capture fetal heart-rate signals through advanced Doppler ultrasound technology.
As per the included specifications, this product is intended for optimal use after the twelfth week of pregnancy.
Notable Features
- Fetal Monitor: Utilizes Doppler ultrasound to accurately detect fetal heart-rate signals during designated use.
- 3MHz Probe: High-frequency probe expertly designed for identifying fetal heartbeats based on the provided specifications.
- Backlit LCD: The 45 × 25mm screen offers crystal-clear digital readings in a variety of lighting situations.
- 50–240 BPM Measurement: Displays detected fetal heart-rate values within the specified range.
- 1 BPM Resolution: Offers heart-rate readings with precision to one beat per minute.
- ±2 BPM Accuracy: Manufacturer-provided specification for accurate fetal heart-rate measurements.
- Three Monitoring Modes: Features manual, averaged, and real-time viewing options for flexible data presentation.
- Built-in Speaker: The integrated audio output allows for direct listening of detected heartbeat sounds through the device.
Product Specifications
- Type – Fetal Doppler Monitor: A Doppler ultrasound device specifically designed for detecting fetal heart-rate signals in accordance with its intended purpose.
- Probe Frequency – 3MHz: Standard probe frequency utilized for detecting fetal heartbeat signals.
- Fetal Heart Rate Range – 50–240 BPM: Displays readings within the defined measurement range.
- Resolution – 1 BPM: Provides heart-rate increments of a single beat per minute.
- Precision – ±2 BPM: Manufacturer-specified accuracy for measurement.
- Display – 45 × 25mm LCD: Digital screen optimized for straightforward viewing of supported data.
- Display Lighting – Backlit: Enhances readability in lower-light environments.
- Monitoring Modes – Three: Offers manual, averaged, and real-time modes for flexible information presentation.
- Audio – Built-in Speaker: An integrated speaker provides audible output of detected fetal heartbeats.
Why Choose Heartbeat Harmony?
Opt for Heartbeat Harmony for smart devices that prioritize simplicity, clear specifications, user-friendly operation, and easily comprehensible features.
The Heartbeat Harmony Fetal Monitor brings together a 3MHz probe, backlit LCD, 50–240 BPM measurement range, three monitoring modes, built-in speaker, automatic power-off, and portable AA-battery functionality in a compact design.
Its various display modes allow for adaptable viewing, while the integrated speaker enables users to listen to detected fetal heartbeats during appropriate use. The backlit display simplifies reading in any lighting, and the automatic power-off feature conserves battery life.

Frequently asked questions
Quick answers about ordering from Couje. More detail on our full FAQ page.
How much does shipping cost, and how long does it take?
Shipping is free on every order — no minimum. Orders are typically delivered within 4–12 business days (processing included), and every order includes tracking. Full details are in our Shipping Policy.
What is your return policy?
You can return items within 30 days of delivery. Once your return is received and inspected, we process your refund to the original payment method. See our Return & Refund Policy for the full process.
How do I track my order?
As soon as your order ships, we email you a tracking number. You can follow your delivery at any time on our Track Your Order page.
How can I reach customer service?
Email us at support@couje.com or use our contact form. Our team is available Monday – Friday: 09:00 AM – 05:00 PM EST and replies within 24 hours. Saturday – Sunday: closed.
