
Best selling Smart rings from Circular
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1. Circular Ring 2 SIL Grösse 8
Circular Ring 2 – Premium Smart Ring with Medical ECG and AI Coach
Your discreet health companion for heart, sleep, and energy – no subscription required. The first smart ring with FDA-certified ECG and AFib detection. Over 140 biomarkers including HRV, SpO₂, temperature, and stress. AI Coach "Kira" provides personalized health insights. Titanium design, ultra-lightweight (2 g), waterproof (IP68). Digital size determination via smartphone – no measuring kit needed.
The Circular Ring 2 is an elegant, smart health ring that combines cutting-edge technology with stylish design. As the first smart ring, it offers a medically certified ECG directly on your finger and detects heart rhythm disorders such as atrial fibrillation (AFib) – ideal for preventive health monitoring.
With over 140 biometric measurements – including heart rate variability (HRV), blood oxygen saturation (SpO₂), body temperature, sleep phases, and stress levels – the ring provides you with precise insights into your health status around the clock. The integrated AI Coach "Kira" analyzes this data and gives you personalized recommendations for a healthier lifestyle.
The high-quality titanium case is not only robust and lightweight (only 2 grams) but also waterproof according to IP68 standards – perfect for everyday use and sports activities. Thanks to digital size determination via smartphone, the ring fits like a glove, without the hassle of a measuring kit.
With a battery life of up to 8 days and wireless charging, the Circular Ring 2 is the ideal companion for anyone who wants to discreetly and effectively keep an eye on their health – all without monthly subscription fees.

2. Circular Ring 2 SIL Grösse 7
The Circular Ring 2 is an innovative smart ring that combines cutting-edge technology with an elegant design. As the first smart ring with a medically certified electrocardiogram (ECG), it offers preventive health monitoring right at your finger. The ring detects heart rhythm disorders such as atrial fibrillation (AFib) and provides over 140 biometric measurements, including heart rate variability (HRV), blood oxygen saturation (SpO₂), body temperature, and stress levels. The integrated AI coach "Kira" analyzes this data and gives personalized recommendations for a healthier lifestyle. Weighing only 2 grams and featuring a robust, waterproof titanium casing (IP68), the ring is suitable for both everyday use and sports activities. The digital size measurement via smartphone ensures a perfect fit without the need for a measuring kit. Additionally, the ring offers a battery life of up to 8 days and allows for easy Bluetooth connectivity.
- Medically certified ECG for preventive health monitoring
- Over 140 biometric measurements for comprehensive health analysis
- Integrated AI coach for personalized health insights
- Waterproof titanium design for everyday and sports use.

3. Circular Ring 2 GLD Grösse 10
The Circular Ring 2 is an innovative smart ring that combines cutting-edge technology with an elegant design. As the first smart ring with a medically certified electrocardiogram (ECG), it offers preventive health monitoring right at your finger. The ring detects heart rhythm disorders such as atrial fibrillation (AFib) and provides over 140 biometric measurements, including heart rate variability (HRV), blood oxygen saturation (SpO₂), body temperature, and stress levels. The integrated AI coach "Kira" analyzes this data and gives personalized recommendations for a healthier lifestyle. Weighing only 2 grams and featuring a robust, waterproof titanium casing (IP68), the ring is suitable for both everyday use and sports activities. The digital size measurement via smartphone ensures a perfect fit without the need for a measuring kit. With a battery life of up to 8 days and wireless charging, the Circular Ring 2 is the ideal companion for anyone looking to keep an eye on their health.
- Medically certified ECG for preventive health monitoring
- Over 140 biometric measurements for comprehensive health analysis
- Integrated AI coach for personalized health insights
- Waterproof titanium design for everyday and sports use.
