If you’re getting a poor ECG signal when using the Circular Ring — here are some simple tips to help you improve the quality of your reading:
✅ 1. Sit Down and Stay Still
Movement or muscle tension can cause interference.
👉 Find a quiet place to sit down, relax your arm just above your thighs (without touching them), and stay still during the 40-second recording.
✅ 2. Ensure Good Skin Contact
Make sure the ring fits snugly on your finger — not too loose, not too tight — to maintain steady skin contact with the electrodes.
Make sure the ring is well positioned on your finger; the sensor area of the Circular Ring (PPG sensors and electrodes) must be in contact and be positioned on the palmar side of your hand — that is, under your finger.
The Circular logo of the ring should be on top of your finger, visible from above.
✅ 3. Use the Correct Hand Position
Follow the app’s guide:
👉 Use the opposite hand and gently touch the ring’s contact point with your fingertip to complete the electrical circuit.
👉Make sure your fingertip is not in contact with another part of your hand but only with the ring. Avoid pressing too hard.
👉Space your finger; the ring should only be in contact with the finger that wears it and the other's hand fingertip. Avoid touching any other surfaces.
Similarly, make sure that your hand does not touch your other hand. Avoid touching any other surfaces.
Make sure to indicate to the app which ring you're wearing the ring in the menu My Ring > Wear the ring on my. This will ensure that the ECG signal is not inverted.
If your ring feels a bit loose, the ECG electrodes (2 metallic spheres that stand out from the inside) might not be making full contact with your skin. To solve this, instead of pressing the ring upward (where the Circular logo is), gently press it downward so the electrodes press against your finger skin.✅ 4. Clean the Sensors
Dirt, sweat, or lotions can affect signal quality.
👉 Wipe the ring’s sensors with a soft cloth before use to ensure they are clean and dry.
✅ 5. Humidify Your Finger for Better Conductance
If your fingers are particularly dry or cold, follow these simple steps before wearing the ring:
- Lightly moisten your finger with a drop of water.
- Gently wipe your finger with a towel — it should feel slightly humid, not wet.
- Put the ring on as usual.
✅ 6. Warm Up Your Hands
Cold hands reduce blood flow and electrical conductivity.
👉 If your hands are cold, rub them together for a minute or two to warm up before starting the ECG.
✅ 7. Avoid Electronic Interference
Remove other rings and watches that you wear. Stay away from electronic and metallic devices (smartwatch, metallic watch or other rings) that could cause interference during the test. Avoid touching any other conductive surface with your skin while conducting the measurement. You can try to discharge static electricity from your body, by touching a grounded conductive object.
✅ 8. Optimal Temperature
For the most accurate ECG readings, make sure to perform your measurement within the recommended working temperature range of 0°C to 37°C (32°F to 98.6°F).
Below 0°C: Blood flow reduces, skin conductivity drops, and signal quality weakens. Above 37°C: Sweat and heat may interfere with sensor contact and signal stability.
💡 Still Having Issues?
If you’ve tried these tips and still experience poor signal quality, please reach out to Circular Support — we’re here to help!
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While ECGs are a powerful tool for heart health, Circular Ring 2 is not a medical device and does not replace professional medical assessments. If you notice unusual readings, consult a doctor for further evaluation. If you experience chest pain, heart palpitations, dizziness, or unusual fatigue, capturing an ECG trace and sharing it in PDF format can provide valuable information for your doctor.
Updated on: 02/12/2025