Circular Ring 2
Expert Reviews
75/100
3 experts
User Reviews
80/100
1 users
Video Reviews
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Description
The Circular Ring 2 is the world's most luxurious smart ring featuring an onboard ECG sensor for AFib detection, 24/7 health tracking of over 13 health features and 140+ biometrics, powered by AI health coach Kira for actionable insights. It offers FDA-cleared ECG, real-time data every 2 minutes, no subscription required.
Highlights
- FDA-cleared ECG for AFib detection in 30-40 seconds
- AI-powered health coach Kira with actionable advice
- Tracks 13+ health features including sleep stages, HRV, SpO2, stress, women's health
- No subscription fees
- Ultra-light 3g titanium design
- Data updates every 2 minutes for high granularity
- Sport sessions with GPS and 30+ activities
- Smart alarm and vital alerts
Specifications
| material | Titanium body with hypoallergenic interior and PVD coating |
| dimensions | 2.55mm thick, 7.8mm wide |
| weight | 3 grams |
| sizes | US 614 |
| battery life | Up to 8 days (Power Mode), 5 days (Performance Mode) |
| charging | 30 minutes via wireless charger |
| sensors | ECG, PPG, temperature sensor, 3x accelerometer |
| connectivity | Bluetooth Low Energy, Airplane Mode |
| compatibility | iOS and Android |
| waterproof | IP68 (50m for 30 minutes) |
| compliance | GDPR & HIPAA compliant |
Pros and Cons
Pros
- Industry-leading ECG accuracy with FDA clearance
- Long battery life up to 8 days
- Lightweight and comfortable titanium build
- Comprehensive health tracking without subscriptions
- AI insights make data actionable
- Waterproof IP68 rating
- Digital sizing with 95% accuracy
Cons
- Requires app open for Bluetooth sync (saves battery)
- Limited color options (Obsidian Black, Gold, Silver, Rose Gold)
- ECG limited to 30-40 second readings, not continuous
- Sizing only US 6-14
- New product, long-term reliability unproven
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Expert Reviews
75/100
3 experts
User Reviews
80/100
1 users