Introducing Circular Ring 2
After years of development shaped by engineers, early backers, and a small independent team in France, Circular today launches Circular Ring 2 globally, now available for purchase directly through www.circular.xyz starting at $349.
Following a record-breaking $4M+ crowdfunding campaign and recognition as one of the most awarded wearables of CES 2025, Circular Ring 2 enters the global market as one of the first smart rings to combine ECG-based heart rhythm monitoring, AFib detection, and AI-powered health coaching – with no subscription required on core 13+ health features.
Designed for people who want clarity, precision, and action from their health data, Circular Ring 2 goes beyond tracking. Powered by Kira, Circular’s AI health coach, the ring analyzes 140+ biomarkers daily to deliver clear, personalized, and actionable recommendations that help users elevate their health and performance – effortlessly.
Features
ECG-Based Heart Rhythm Monitoring
Circular Ring 2 features ECG-based heart rhythm analysis using a validated algorithm designed to identify irregular heart rhythms, including atrial fibrillation (AFib). In just 30 seconds, users can access meaningful insights into their heart rhythm and receive alerts when irregular patterns are detected.
Combined with advanced sensors – including PPG (red, green, infrared), skin temperature, and a 3-axis accelerometer – Circular Ring 2 delivers high-precision, continuous health monitoring from the finger.
Kira: Turning Deep Health Data into Smart Action
At the heart of Circular Ring 2 is Kira helping turn health data into simple daily recommendations.
- Learning Phase: Kira calibrates during the first 14 days, learning sleep, activity, stress, and lifestyle patterns
- Actionable Coaching: From sleep optimization and stress management to energy balance and recovery guidance
- Smart Motivation: Progress tracking – Circular Coins, and health milestones keep users engaged
- Leaderboard: A global monthly leaderboard lets users compete with the Circular community for added motivation. Rankings reset every month, rewarding progress and consistency with Circular Coins that unlock real-life benefits.
Kira doesn’t just explain your data – it tells you what to do next.
Comprehensive Wellness Monitoring
Circular Ring 2 offers one of the most comprehensive health feature sets in a smart ring – with no subscription required on core features:
- Heart Rhythm Monitoring (ECG-based)
- Sleep Analysis & Sleep Cycles
- Energy & Recovery Analysis
- Stress & Coherence Tracking
- Heart Rate & Resting Heart Rate
- Heart Rate Variability (HRV)
- Blood Oxygenation
- Breathing Rate
- Temperature Trends
- Steps & Cardio Points
- Sport Sessions & Activity Detection
- VO₂ Max Estimates
- Women’s Health Insights
All insights are accessible through the Circular app, your personal hub for health, lifestyle, and performance improvement.
Wireless Charging & App Redesign
Circular Ring 2 includes a wireless charging dock for seamless, cable-free recharging. The companion app has undergone a complete redesign, delivering a more intuitive, refined experience that mirrors the ring’s premium aesthetic.
Design, Battery & Durability
Circular Ring 2 was designed to be light enough to forget about, durable enough to wear every day, and refined enough to feel like personal jewelry:
- Premium Build: Ultra-lightweight (2-3g) hypoallergenic titanium
- Finishes: Obsidian Black ($349), Silver ($449), Gold & Rose Gold ($549)
- Ultra-Thin Profile: Just 2.6mm for discreet 24/7 wear
- Battery Life: Up to 7 days in Eco Mode (4 days in Performance Mode), with a full recharge in 30 minutes
- Fast Data Refresh: Every 2 minutes – among the fastest in the industry
- Durability: IP68 waterproof and dust-resistant
- Connectivity: Bluetooth Smart® with airplane mode, multi-device support, and up to two rings per account
“Circular was built around a simple idea: health technology should feel personal, useful, and accessible – not locked behind subscriptions or designed only for elite athletes.”
Circular Launches Team Dashboard for Institutional & Professional Use
Circular also announces the launch of the Circular Team Dashboard, a high-performance management platform designed to integrate seamlessly with Circular Ring 2.
Built for hospitals, clinics, enterprises, and professional sports teams, the platform enables large-scale biometric monitoring with centralized visibility and AI-powered precision.
Centralized Intelligence for High-Stakes Environments
The Team Dashboard aggregates data from multiple Circular Ring 2 devices into a unified interface, allowing administrators to monitor entire teams, departments, or athletic rosters in real time.
Key capabilities include:
- Hierarchical Organization: Manage multiple teams or patient groups within a single organization
- Customizable Views: Prioritize specific metrics for recovery monitoring or performance optimization
- Granular Drill-Down: Move from group-level dashboards to minute-by-minute individual data
AI-Powered Monitoring with Kira
Powered by Circular’s AI, Kira acts as a continuous monitoring assistant by:
- Detecting anomalies and outliers in HRV, temperature, SpO₂, and other biometrics
- Flagging early signs of illness, injury, or abnormal recovery patterns
- Ensuring data integrity by identifying inconsistent wear or missing data
Built for Professional Workflows
The platform supports secure bulk data export in professional formats, enabling integration with Electronic Health Records (EHR), clinical research systems, and athletic performance software.
“Our goal was to bridge the gap between individual wellness and institutional health management,” said the Circular Product Team. “By combining advanced sensing technology with an AI-backed command center, we are giving professionals the tools to intervene earlier and more effectively.”
Privacy & Compliance
Circular prioritizes data protection with end-to-end encryption, GDPR and HIPAA compliance, and secure medical-grade servers based in Paris. Users maintain full control of their health data at all times.
CEO Statement
“With the Circular Ring 2, we’ve reimagined what a smart ring can be – combining advanced medical-grade health technology with timeless design and unmatched durability,” said Amaury Kosman, Co-Founder and CEO of Circular.
“This isn’t just a wearable; it’s a statement piece that empowers users to take control of their wellness without compromising on style.”
Availability & Pricing
The Circular Ring 2 is available globally now at www.circular.xyz:
- Obsidian Black – $349
- Silver – $449
- Gold & Rose Gold – $549
Industry Validation & Long – Term Market Continuity
In June 2024, Circular entered into a multi-year patent license agreement with ŌURA, the pioneer of smart ring technology. The agreement grants Circular the right to continue developing, selling, and supporting its smart rings and associated applications on a long-term basis, subject to ongoing royalty payments.
The agreement reflects mutual recognition of innovation in the smart ring category and reinforces Circular’s commitment to responsible growth, intellectual property respect, and sustained investment in research and development.
“ŌURA revolutionized wearable technology with the introduction of the smart ring over a decade ago,” said Amaury Kosman, Co-Founder and CEO of Circular. “We recognize the strength of foundational patents in this category, and this agreement enables Circular to continue innovating confidently while delivering advanced health technology to users worldwide.”
About Circular
Founded in 2019, Circular XYZ Circular is an independent wearable company based in France, built by founders, engineers, and long-term believers who wanted health technology to feel more human, more useful, and less dependent on subscriptions. Based in France, Circular’s mission is to craft the ultimate wearable experience, seamlessly integrating advanced health tracking into everyday life.
A Legacy of Innovation
Since its early development years (2017), Circular has focused on one goal: helping people better understand their health through wearable technology designed for everyday life. A dedicated team of engineers, designers, and medical experts has spent years refining a device that goes beyond traditional wearables to serve as a true health companion. Circular Ring 2 is designed to make health tracking seamless, intuitive, and, most importantly, insightful.
With over 25,000 units delivered worldwide and 133 updates to the app and ring, Circular has continually advanced wearable health technology. The Circular Ring 2 is designed not just for tracking data, but for providing meaningful insights that empower users to take control of their health with confidence and clarity.
“Circular was created by a small independent team that wanted wearable health technology to feel more personal, practical, and transparent. The company remains independently backed, allowing it to focus on long-term product development rather than subscription-driven growth.”
About the Author
Adrian Gunning Adrian lives in Melbourne Australia and has a huge passion for gaming, technology and pop culture. He recently finished his a Bachelor of Journalism and is currently focusing on games journalism. When not writing and playing video games, Adrian can be found in Comics 'R' Us debating the pros of the DC Universe and cons of the Marvel Universe.
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