Verified November 2, 2026

Circular Ring 2

Circular Ring 2 is a titanium smart ring for users who want ECG, blood-pressure trend tracking, sleep, recovery, stress, and activity tools without a required membership. Its sizing kit and US-size range make it a fit-conscious option for buyers who want health metrics in a discreet daily-wear ring.

Illustrative AI render of Circular Ring 2

Product type: smart ring

Specifications and details

BrandCircular
Model NameRing 2
Platform SupportiOS 15 and later; Android 9 and later
Subscription RequiredNo
Claimed Battery Life7 days
Water Resistance Rating50 m for up to 30 minutes
Ring MaterialTitanium
Sensor SetSingle-lead ECG electrodes, 3-LED PPG optical array, three-axis motion sensor, skin-temperature sensor, and haptic engine; supports ECG and AFib signs, blood-pressure trends, heart rate, HRV, SpO₂, sleep, activity, stress, and cycle tracking
Sizing MethodUS sizes 6–14 with sizing kit, digital sizing tool, printable guide, and string method
List Price349 USD

Last verified: November 2, 2026

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