The Technology Behind the Circul Ring

Advanced Sensors and Stabilization

• High-accuracy PPG Sensors for SpO₂ and Heart Rate：The Circul Ring utilizes high-precision photoplethysmography (PPG) sensors to measure your blood oxygen levels (SpO₂) and heart rate.
• Real-time Data Updates：The sensors capture data every second with a 100 Hz signal frequency, ensuring constant and accurate readings.
• Compliance with AASM Standards：Allowing compliance with the AASM standard, which requires an oxygen update cycle of less than 3 seconds.
• Benchmarked Against ECG Gold Standards：The Circul Ring’s measurements are benchmarked against ECG gold standards, ensuring clinical-grade accuracy, even during physical activities or restless sleep.

• Auto-sizing for a Perfect Fit：The Circul Ring features an adaptive design that adjusts automatically to your finger size, accommodating 13 different sizes for a perfect fit.
• Ensuring Accurate Data Collection： The auto-sizing ensures accurate data collection by maintaining optimal sensor contact with your skin.
• Comfortable Wear for Continuous Monitoring：The Circul Ring is designed for all-day wear, prioritizing comfort and seamlessly tracking your sleep, SpO₂, and heart rate without interruption, day or night.

  
  

   Image Source: CIRCUL RING

Circul Ring's SpO₂ Monitoring Process

• Continuous 1-second data updates The Circul Ring employs advanced sensor technology to provide continuous SpO₂ monitoring with 1-second data updates. This rapid update cycle ensures that no critica changes in your oxygen levels go unnoticed.
• Real-time analysis using Oxygen Desaturation Index (ODI) The Circul Ring uses the Oxygen Desaturation Index (ODI) to analyze your SpO₂ data in real time. This metric calculates the number of oxygen desaturation events per hour, helping to categorize the severity of sleep apnea.
• Identifying subtle breathing disturbances for actionable insights By identifying subtle breathing disturbances, the Circul Ring provides actionable insights to improve your sleep and overall health.

In clinical test CIRCUL also have very accuracy with the PSG result：

Clinical Test Results: Circul Ring's Accuracy Compared to PSG

• ODI Comparison：The ODI was 25.3±24.5 events/h using PSG and 22.2±24.5 events/h using Circul (P<0.0001), with an intraclass correlation coefficient (ICC) of 0.884.
• CT90 and CT90/TST Agreement：CT90 and CT90/TST between the two methods were not different.
• MSpO₂ Level Comparison：The MSpO₂ level calculated by PSG was slightly lower than Circul, 95.0% (93.0-96.0%) vs 95.3% (93.9-96.6%), P<0.0001.
• Correlation between Circul-ODI and PSG-AHI：Circul-ODI had a good correlation (r=0.91, p<0.0001) and close agreement with PSG-AHI (Bland-Altman analysis: Mean Difference 6.4, 95% CI -14.8 to 27.5 events/h).
• Performance Metrics：Using a threshold of AHI ≥5 events/h, the Circul had 87% sensitivity, 83% specificity, 5.09 positive likelihood ratio (LR+), 86% accuracy, and 0.929 area under the curve (AUC).

Heart Rate Monitoring: Precision in Every Beat

Circul Ring's Heart Rate Tracking Technology

• The Circul Ring employs advanced photoplethysmography (PPG) sensors.
• These sensors provide accurate heart rate measurements with a one-second update cycle.
• The error margin is less than ±2 beats per minute (BPM).
• Validated against the ECG gold standard for clinical-grade accuracy.
• Offers real-time data for both sleep and daily activities.

• Movement can disrupt heart rate monitoring in wearable devices.
• The Circul Ring features patented sensor stabilization technology.
• This innovation maintains consistent contact with your skin, even during restless sleep or physical activity.
• Adapts to your finger size for improved accuracy.

• The Circul Ring leads in heart rate monitoring.
• Cutting-edge technology ensures professional-grade heart health tracking.
• Empowers you to take control of your health journey.

Circul Ring: Why High Accuracy Matters

The Impact of Precision on Health Monitoring

• 98% precision can identify subtle fluctuations in SpO₂ during sleep;
• Early detection of potential issues like sleep apnea, allowing time for medical intervention;
• Proactive health management to reduce long-term health risks.

• Providing clinical-grade data: SpO₂ updates every second, heart rate error < ±2 BPM;
• Optimizing lifestyle habits like exercise and sleep based on precise data;
• Providing reliable data for medical consultation, improving health management efficiency.

• Analyzing users' unique physiological patterns (e.g., trends in resting heart rate changes);
• Targeted recommendations: stress management (e.g., breathing exercises), sleep cycle adjustments;
• Dynamically optimizing health plans to meet users' real-time needs.

• Real-time data visualization (e.g., SpO₂ curve, heart rate variability) providing intuitive feedback on body status;
• Providing confidence and tools to help users actively improve their health.

FAQ

How does the Circul Ring ensure accurate SpO₂ monitoring during sleep?

Can the Circul Ring detect sleep apnea?

How often does the Circul Ring update heart rate data?

Is the Circul Ring comfortable for continuous wear?

What makes the Circul Ring stand out from other wearables?