Heart Health & SpO2: Why Fingertip Precision Changes Everything

Your heart is your engine. Yet, most health trackers rely on wrist-based estimates, where signals are often distorted by movement and skin thickness. With the KLYS smart ring, we’ve moved technology to where it performs best: your fingertips.

The Science of SpO2: Why Measure Blood Oxygen?

SpO2, or pulse oxygen saturation, measures the amount of oxygen carried by your red blood cells. For a healthy adult, this level should stay between 95% and 100%.

Detecting Nightly Disruptions

Nighttime is when SpO2 measurement becomes vital. A sudden drop in blood oxygen can be a sign of micro-awakenings or respiratory difficulties you might not even suspect. The KLYS ring monitors these variations invisibly, providing a detailed report upon waking to help identify potential issues before they become chronic.

Resting Heart Rate (RHR): Your Internal Barometer

Your resting heart rate is one of the best predictors of your overall health. An RHR that increases over several days is often an alarm signal from your body: accumulated fatigue, onset of illness, or overtraining.

Using infrared PPG sensors, KLYS captures your heart rate with fidelity close to an ECG. By analyzing long-term trends, the KLYS app helps you understand what influences your heart: caffeine, exercise, lack of sleep, or even emotional stress.

Why the Finger is Superior to the Wrist?

It’s a matter of biology. Blood vessels in the fingers are closer to the skin’s surface. In a smartwatch, the signal must pass through wrist muscles, tendons, and bone, creating reading errors. By wearing the KLYS ring on your index or middle finger, you get a direct, stable, and ultra-precise reading, even while moving.

Heart Health & KLYS

1. Can the ring replace a blood pressure monitor? No. KLYS measures heart rate and oxygen, but it does not measure blood pressure. it is a wellness and prevention tool, not a medical diagnostic device.

2. How do I read my SpO2 chart in the app? The app displays a simplified curve. If your levels regularly drop below 92% during the night, the app will notify you so you can discuss it with a healthcare professional.

3. Do the sensors work on all skin tones? Yes. KLYS uses latest-generation infrared sensors designed to penetrate the skin uniformly, ensuring maximum precision for all users.

FAQ
Is the app easy to use?

Yes. We designed the interface to be "glanceable." You don’t need to be a tech expert or a doctor. Just open the app, and your daily scores tell you exactly how you’re doing in 30 seconds.
Do I need to check the app every hour?

Not at all. Your ring stores your data for up to 7 days. You can just check it once a day (like every morning) to see your sleep and recovery patterns.
Is my health data private?

Nous nous efforcerons d’expédier votre commande le plus rapidement possible. Une fois votre commande expédiée, vous recevrez un e-mail contenant des informations supplémentaires. Les délais de livraison varient en fonction de votre emplacement.