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Returned & Tested

Circular Ring 2 BLA Grösse 10

10, Black
CHF277.54currently CHF319.– new
Delivered the day after tomorrow
Only 1 piece in stock
Tested by Digitec
free shipping

Refurbished offer

Product condition
Very good: fully functional. Some light scratches or scuffs.
Packaging condition
Opened and in excellent condition.
Scope of delivery
Refurbished Circular Ring 2 BLA Grösse 10 (10, Black), Original accessories
Warranty24 months Warranty (Bring-in)
Return30-day right of return

Product details

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-light (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 right at 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 perfectly 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 keep their health discreetly and effectively in check – all without monthly subscription fees.

Key specifications

Colour
Black
Material group
Metal
ring size
10
Health functions
Blood pressure measurementCaloriesCycle protocolECGHeart rate measurementHeart rate monitoringOxygen saturationPedometerRespiratory rateSleep recordingStress levelsTemperature detection
Weight
3 g

General information

Item number
59970604
Manufacturer
Circular
Category
Smart rings
Manufacturer no.
CIR-RING-V03-OBL-S10
Release date
5.7.2025

Colour

Colour
Black
Exact colour description
Black

Material

Material group
Metal
Material
Lightweight titanium

Smart Ring features

ring size
10
Health functions
Blood pressure measurementCaloriesCycle protocolECGHeart rate measurementHeart rate monitoringOxygen saturationPedometerRespiratory rateSleep recordingStress levelsTemperature detection
Sensors
AccelerometerTemperature sensor
Connectivity
Bluetooth
Protection type (IP code)
IP68

Origin

Country of origin
China

Voluntary climate contribution

CO₂ emissions
0.2 kg
Climate contribution
CHF 0.11

Scope of delivery

Scope of delivery
1 x app access (via QR or App Store)1 x Circular Ring 21 x cleaning cloth1 x Digital operating instructions1 x USB-C charging cable1 x Wireless charging case

Product dimensions

Weight
3 g

Package dimensions

Length
10.20 cm
Width
9.60 cm
Height
6.50 cm
Weight
165 g
30-day right of return
24 months Warranty (Bring-in)

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