CIRCUL RING
KREISRING
Key Highlights 🌟
- Breakthrough Health Monitoring
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- True Continuity · Real-Time · Professional-Grade Monitoring.
- World’s 1st Clinically Validated BP Monitoring Wearable. (For wellness and research purposes only)
- Blood oxygen monitoring: The only one with real-time updates every second
- Powered by FDA-certified sensor technology
- Unique Heart Health Index aggregates HR, HRV, and rhythm trends for a clear overview.
- Adaptive-Fit for 24/7 Comfort
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- Adaptive Sizing, all-day comfort: Follows natural finger size changes
- One Ring, any finger: No need for exact sizing or replacements.
- Expert-Validated Sleep Monitoring
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- The ONLY smart ring validated by OSA clinical studies
- Monitors nightly oxygen fluctuations, calculates sleep debt, and provides bedtime and nap alerts.
- Certified medical device by Japan's PMDA
- Lifetime Health Investment
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- One-time purchase for lifetime use
- No monthly subscription fees
FREE SHIPPING
1 Year WARRANTY
30 Days RETURNS
SECURE CHECKOUT
PRODUCT FEATURES
- Adaptive-Fit Design for 24/7 Comfort: 🔄 Revolutionary adaptive technology automatically adjusts to changes in finger size, ensuring accurate readings while maintaining a comfortable fit.
Fits multiple fingers, no sizing kits required.
- True Continuity · Real-Time · Professional-Grade Monitoring: 🩸Tracks heart rate, HRV, stress, and energy levels all day. Data updates every second. HRV metrics (SDNN, RMSSD) <5% deviation, offering long-term trend and recovery reference.
- Unique Heart Health Index 🌟Aggregates heart rate, HRV, and rhythm trends for a clear overview of heart state, supporting daily wellness insights.
- Professional-GradeSleep Apnea Risk Assessment: 💤 Monitors overnight blood oxygen fluctuations and provides personalized sleep apnea risk assessment (for wellness trend reference only). Calculates sleep debt and offers bedtime and nap reminders to support better sleep habits and recovery.
- AI-Powered Cuff‑Free BP monitoring：🩺Revolutionary cuff-free blood pressure monitoring with lab-grade accuracy. Validated through thousands of real-world tests for reliable tracking you can trust.(For research and innovation purposes only)
- Women’s Cycle Insights (Full Upgrade in 2026) 🌸
Phase 1 (2025): Basic cycle tracking (temperature + HRV + heart rate) with manual cycle logging.
Phase 2 (2026): Full-featured cycle monitoring — ovulation prediction, symptom logging, and personalized alerts.
- No Subscriptions, Extended Battery: 🔋 One-time purchase unlocks all features permanently. 7-day battery life, one week worry-free. Compatible with iOS/Android and Apple Health. 5 ATM water resistance.
- Professional Fitness Tracking: 🏃Real-time Exercise Heart Rate monitoring with customizable training goals. Accuracy matches chest-strap monitors. In 2026, “Plan + Reminders + Logging” will be added for professional-grade workout management.
- Health Tracking with OTA Updates: 📊 Monitors heart rate, HRV, Blood Oxygen, activity, stress, and temperature. OTA updates ensure latest features, while the app provides trend analysis and personalized insights.
SPECIFICATIONS
★ Available Sizes: S: US 6–9.5; M: US 10–13; L: US 13.5–18+
★ Weight: S: 5.6g, M: 6.5g, M+: 6.8g, L: 7.1g;
★ Ring Battery Life: 7 Days (in TRULY continuous mode);
★ Charging Box Battery Life: 120+ hours (in 2026 Q1);
★ Compatibility: iOS 12+ and Android 8.0+;
★ Waterproof Class: 5 ATM, short-term immersion (<1 hour);
★ Warranty: 1-Year Free warranty;
★ Materials: Premium PVD-coated stainless steel — the same material used in luxury watches.
★ Data Storage: Stores up to 3 days of data (depending on usage). Daily sync with the app is recommended.
# 30-tägiges Rückgaberecht
1. Bedingungen für vollständige und teilweise Rückerstattung
2. Nicht erstattungsfähige Situationen
3. Rückgabeprozess
4. Rückerstattungsabwicklung
5. Besondere Hinweise
# Austausch
Wenn das gelieferte Produkt im Originalzustand und unbenutzt ist, Sie es aber gegen eine andere Größe oder Farbe umtauschen möchten, empfehlen wir Ihnen, eine Rücksendeanfrage zu stellen und eine neue Bestellung aufzugeben. Sie tragen alle mit der Rücksendung verbundenen Kosten. Sofern die Rücksendung nicht auf Mängel, Schäden oder Nichtkonformität zurückzuführen ist, werden Versand- und Bearbeitungsgebühren sowie gezahlte Steuern nicht erstattet.
# Erstattung
Eine vollständige Rückerstattung bedeutet, dass Sie den Gesamtbetrag Ihrer Bestellung zurückerhalten, wenn Sie das Produkt gemäß unseren Rückgaberichtlinien zurücksenden.
Sie haben möglicherweise Anspruch auf eine teilweise Rückerstattung, wenn:
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Bei der Überprüfung der Rücksendung stellen wir Schäden, Verunreinigungen, Abnutzungserscheinungen oder fehlende Teile fest. Sofern diese Mängel nicht bereits in Ihrem Rücksendeantrag angegeben wurden, behalten wir uns das Recht vor, den Wertverlust von Ihrer Rückerstattung abzuziehen.
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Sie haben Produktpakete oder Geschenke erhalten. Für eine vollständige Rückerstattung empfehlen wir Ihnen, alle Artikel des Pakets zurückzusenden. Sollten Sie die Artikel nicht zurückgeben können, ziehen wir den entsprechenden Betrag von Ihrer Rückerstattung ab.
Bitte beachten Sie: Sie tragen alle Kosten im Zusammenhang mit der Rücksendung des Produkts, es sei denn, die Rücksendung erfolgt aufgrund von Mängeln, Schäden oder Nichteinhaltung der Vorschriften und Sie haben entsprechende Fotos und Beschreibungen bereitgestellt.
Bearbeitungszeit für Rücksendungen oder Umtausch
Bei Rückgabeanfragen, die unseren Richtlinien entsprechen, veranlassen wir die Rückerstattung umgehend nach Erhalt des zurückgesendeten Produkts. Die Rückerstattung erfolgt über die ursprüngliche Zahlungsmethode und kann bis zu 10 Kalendertage dauern.
#Garantieabdeckung für CIRCUL RING
Für alle Originalkomponenten neuer Produkte gilt in Ländern außerhalb des Europäischen Wirtschaftsraums (EWR) eine einjährige und in EWR-Ländern eine zweijährige Garantie. Reklamationen müssen direkt bei CIRCUL unter Vorlage des Kaufbelegs eingereicht werden. Die Garantie gilt für den Erstbesitzer und ist auf nachfolgende Besitzer übertragbar. Bei Schäden aufgrund von Verarbeitungsfehlern repariert, ersetzt oder erstattet CIRCUL den Kaufpreis.
Ausschlüsse von der Garantiedeckung
Die Garantie deckt nicht ab:
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Unsachgemäße oder fahrlässige Verwendung, Bedienung oder Veränderung.
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Wartung entgegen der Produktpflegeanleitung.
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Normale Abnutzung.
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Wiederaufladbare Batterien haben eine begrenzte Lebensdauer und gelten als Verbrauchsmaterial. Ein Batteriewechsel ist nicht in der Standardgarantie enthalten.
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Schäden oder Mängel, die durch Unfälle verursacht wurden.
# Erweiterte Garantiebedingungen von Circul Ring
1. Leistungsübersicht:
Mit dem Kauf dieser Garantieverlängerung verlängert sich die Grundgarantiezeit Ihres Smart Rings. Die genaue Dauer richtet sich nach der gewählten Serviceart. Während der Garantieverlängerung profitieren Sie von einem kostenlosen Produktaustauschservice zum gleichen Standard wie während der ursprünglichen Garantiezeit.
2. Geltungsbereich:
Kostenloser Ersatz durch ein neues Produkt ist bei Herstellungsfehlern (einschließlich Sensorfehlern, deutlicher Verschlechterung der Akkulaufzeit, Material- und Verarbeitungsfehlern usw.) und Funktionsstörungen, die bei normalem Gebrauch auftreten, möglich. Probleme, die durch Firmware-Upgrades über die App behoben werden können, sind jedoch nicht von dieser erweiterten Garantie abgedeckt.
3. Ausschlüsse:
Von Menschen verursachte Schäden durch Stürze, Eindringen in Wasser, Quetschungen usw. aufgrund der Nichtbeachtung der offiziellen Betriebsanleitung; Fehlfunktionen durch unbefugte Demontage, Modifikation oder Verwendung nicht offizieller Zubehörteile; optische Abnutzung und normale Alterung von Verbrauchsteilen (wie Ladekabeln) sind alle von der erweiterten Garantie ausgeschlossen.
4. Serviceprozess:
Sollten während der verlängerten Garantiezeit Probleme mit Ihrem Produkt auftreten, können Sie über die offizielle App oder den Kundendienst einen Kundendienst beantragen. Folgen Sie den Anweisungen zur Rücksendung des Produkts. Nach Überprüfung der Produktgarantie erhalten Sie innerhalb von 10 Werktagen ein neues Ersatzprodukt.
5. Zusätzliche Hinweise:
Dieser erweiterte Garantieservice ist nicht übertragbar und gilt nur für den ursprünglich erworbenen Smart Ring. Nach Inkrafttreten des Services werden keine Rückerstattungen mehr unterstützt. Das Unternehmen behält sich das Recht der endgültigen Auslegung und Änderung der erweiterten Garantiebedingungen vor. Die Benutzer werden über alle Änderungen auf offiziellem Wege informiert.
Overview
Real-Time Tracking
data updates every Second.
One Ring, Any Finger
All-Day Comfort
Sleep Apnea detection
Enhanced Sleep & Recovery Management
50 Meters
Water-resistance
World’s First: AI-Powered
Blood Pressure
measurement
7 days battery life
Tracks Sleep Debt
with bedtime and Nap reminders
Body Energy Score
Reveals what drains your energy
SST™ Ultra 2.0 sensors
Professional Precision
Subscribe for FREE !
Women’s Cycle Tracking
(will be Full Upgraded in 2026)
All Features
Advanced algorithms ensure each HRV change is captured precisely. Long-term trends are easy to see, letting you feel your recovery and readiness.
Continuous HR and HRV tracking captures every nuance of your body’s rhythm. Feel the flow of your day and understand your body like never before.
providing highly accurate heart rate information (with accuracy of ±2 bpm) to help users promptly identify cardiac health abnormalities.
Get real-time health updates, with temperature monitoring accurate to ±0.1°C to quickly detect changes, especially during menstrual cycles and flu seasons.
Measure blood pressure in seconds with no bulky arm cuffs required. Powered by our lab-grade AI-driven 125 Hz PPG algorithm.
(Note: this feature is intended for research and innovation purposes only.)
View trends anytime to understand your body’s changes. *Data is intended for personal health and research reference, not as a medical diagnosis.
Our upcoming automatic BP monitoring uses on-device AI for local, network-free analysis with no manual input. It turns manual checks into a seamless “wear-and-forget” experience, providing continuous and effortless BP protection.
See how your body and mind are holding up, whether you’re just waking up, tackling a busy morning, or winding down in the evening.
Know when your energy dip is caused by physical fatigue, poor sleep, or intense activity, or by mental load, emotional tension, or a stressful day.
Get gentle cues to adjust your pace—take a short break, hydrate, or focus on recovery—so you can maintain your best rhythm throughout the day.
Analyse nightly blood oxygen fluctuations, provides a personalized assessment of your Sleep Apnea risk.
See accumulated sleep debt and receive helpful bedtime or nap reminders. Make better decisions for rest and recovery every day.
Capture oxygen levels and sleep phases throughout the night for a detailed picture of your sleep quality.
Supports monitoring up to 5 types of activities, such as running and cycling
Tracks exercise heart rate during workouts, providing real-time data and post-exercise analysis to help optimize performance.
Whether you're a runner or yoga lover, CIRCUL is designed to help you achieve your activity goals. With detailed post-workout analysis. 90% of users report significant progress.
Track temperature, HRV, and heart rate with easy period tagging. Understand your body’s rhythm and spot early trends.
Predict ovulation, fertile windows, and log symptoms with personalized alerts. Long-term trends give a clear picture of your monthly cycle.
What Our Testers Are Saying
Gavin Hall
“The adjustable size was important to me because my fingers sometimes swell, making other rings uncomfortable. Battery lasts almost a week! I don’t have to worry about charging every night, which is a huge relief.”
Medical Scientist
James W.
"Finally, I can track my heart rate continuously and see trends I never noticed before! The insights I've gained from the Gen 2 MAX have transformed how I approach my fitness routine. I now know my body better. "
Data Analyst
Sarah Johnson
"The women’s cycle tracking is surprisingly accurate and helpful. It really makes planning easier. With the NEW Gen ring, I feel empowered to manage my health with confidence, knowing I have reliable data at my fingertips!"
Health and Weallness Coach
Benjamin Shullaw
"The sleep debt reminders actually help me go to bed on time. I feel more rested and focused. Since upgrading to the Gen 2 MAX, my sleep quality has improved significantly, and I wake up feeling refreshed and ready to tackle the day!"
Corporate Executive
Charlie Martin
“The NEW Gen Ring is incredibly comfortable, even for arthritic fingers, and provides real-time HRV and heart rhythm data to help understand workout effects. Thank you!!!!”
IT Project Manager
Parameter
SST™ Ultra 2.0 Sensors
Advanced PPG Technology;
Green / Red / Infrared LEDs;
G-sensor (accelerometer);
High-precision temperature sensor
Materials
Non-allergenic 316L stainless steel with PVD coating;
Luxury watch-grade material suitable for daily wear.
Weight
Ring weight: varies by size
S: US ring size 6–9.5
M: US ring size 10–13
L: US ring size 13.5–18+
Compatibility
iOS and Android
Integrates with Apple Health
No subscription fee
Battery
7 days of battery life;
Built-in 25 mAh Li‑ion battery;
Full charge in < 90 mins via USB‑C.
Reliability
100,000-cycle lifespan test;
200 N tensile strength test;
PMDA certified;
Security & Data Storage
Ring stores up to 3 days of data; Daily sync recommended.
What's in the box
CIRCUL RING 2 MAX *1
Magnetic Charging Base *1
Type-c charging cable *1
Quick Start Guide *1
Still Got Questions?
Please read our frequently asked questions to find out more.
Q1. Is it capable of continuously monitoring my health?
Yes, It provides near-medical-grade health data with real-time tracking at second-level intervals, ensuring that critical indicators such as heart rate, real-time blood oxygen, HRV, and blood pressure meet industry-leading accuracy standards.
Q2. What metrics does Circul Ring track?
- Heart Rate (24/7 Continuous monitoring)
- Blood Oxygen Levels (SpO2)
- High Precision HRV monitoring
- Sleep Apnea monitoring
- Temperature
- Blood Pressure
- Real-time Sleep Monitoring
- Exercise Heart Rate
- Activity Tracking
- Steps and Movement
- Energy & Stress
- Women’s Cycle record
Q3. How long does the battery last? 🌟
The CIRCUL RING features medical-grade tracking at 1-second intervals. Due to the increased power consumption from these intensive calculations, the battery life in this mode is approximately 7~9 days per charge.
Q4. What makes Circul Ring different from other smart rings?
The CIRCUL RING, building on the FDA-grade sensor technology of the original Circul+, is designed for precise and comfortable health monitoring. Our proprietary SST™ (Sensor Stabilization Technology) ensures unparalleled data precision, adapting to natural finger size variations of up to 3mm throughout the day.
It provides Near-Medical-grade Health Data with Real-time Tracking at Second-level Intervals, ensuring that critical indicators such as heart rate, real-time blood oxygen, HRV, and blood pressure meet industry-leading accuracy standards.
Q5. Do I need a subscription?
No. All key features are included, no recurring fees required.
Q6. When will women’s cycle features launch?
Basic temperature tracking, combined with HRV, HR, and manual tagging for smarter cycle tracking, will launch with the Circul Ring 2 MAX in 2025; full-featured Women’s Cycle Tracking — including ovulation prediction, symptom logging, and personalized alerts — will launch in 2026.
Q7: How many generations of the CIRCUL RING are there?
Here’s how our smart ring lineup has evolved over time:
- Circul (2018/2019):
Our first self-adjusting smart ring, designed primarily for sleep tracking. - Circul+ (2020/2021):
Added sensors and improved data precision, still focused on clinical monitoring. - CIRCUL RING 2 (2024):
A complete redesign for everyday use, with upgraded hardware and all-day tracking. - CIRCUL RING 2 MAX (2025):
The latest refresh of CIRCUL RING 2 — offering enhanced comfort, refined algorithms, and an improved overall user experience.
Q8: So what’s the difference between CIRCUL RING 2 and CIRCUL RING 2 MAX? 🌟
CIRCUL RING 2 MAX is an enhanced version of the current CIRCUL RING 2.It features improved comfort, upgraded firmware and algorithms, and refined sensor optimization for even better daily tracking accuracy. Think of it as a premium refresh, not an entirely new model.We’ve also prepared a detailed feature upgrade and compatibility chart so you can clearly see how CIRCUL RING 2 MAX builds upon the CIRCUL RING 2 and what improvements are supported on each model.
Q9: Is my CIRCUL RING 2 still supported?
Absolutely. CIRCUL RING 2 continues to receive firmware updates and full app support. The CIRCUL RING 2 MAX simply builds upon this foundation with hardware and design refinements.
Q10: Will there be changes in the app or data platform?🌟
Yes — alongside the launch of CIRCUL RING 2 MAX, we will release a major firmware update for the existing CIRCUL RING 2, as well as a redesigned CIRCUL RING app.
These updates will deliver more stable firmware performance, improved algorithms, and an upgraded user experience — while keeping all your historical data intact.The new CIRCUL app introduces enhanced visuals and new features, and even if you’re using the current CIRCUL RING 2, you’ll still enjoy full compatibility and access to core improvements.
Q11. My ring readings seem inaccurate?
It’s common for wearable devices like Circul Ring to have occasional variations in step count, blood oxygen, blood pressure, or sleep data. Factors such as how you wear the ring, movement during measurement, skin type, and environmental conditions can affect accuracy. To get the best results, please ensure the ring fits properly, stay still during measurements, and keep your app updated. These readings are meant to support your health awareness and are not a substitute for professional medical tests. For more details and tips, please see our full FAQ on reading accuracy.
Q12. What’s the difference between CIRCUL RING and Circul+ (Circul Pro)?
CIRCUL+ is an FDA-certified pulse oximeter primarily designed for clinical and sleep-monitoring use.CIRCUL RING, on the other hand, brings the same core sensing technology to everyday users. It’s optimized for all-day health management, including heart rate, HRV, stress, and activity tracking — catering to a broader, lifestyle-focused audience.To keep things simple and avoid overlap, these products are operated under distinct brand identities but both belong to the BodiMetrics smart ring family.
