DEPLOYDatabase

Robot model

Circular Ring 2

The Circular Ring 2 is a smart ring that collects heart rate, HRV, SpO2, skin temperature, sleep stages, and activity metrics.

Track Circular Ring 2Get notified of verified changes
Manufacturer
Circular
Form factor
biometric
Maturity
commercial
Lifecycle
active
Website
circular.xyz ↗

Verified profile

  • 1

    Sources on record

  • 0

    Tracked changes

  • Updated recently

    Last verified change

How we verify →

Overview

The Circular Ring 2 is a smart ring that collects heart rate, HRV, SpO2, skin temperature, sleep stages, and activity metrics. Circular has not published a comprehensive privacy policy addressing how biometric health data is stored, encrypted, retained, sold, or shared. Sold at approximately $299.

Verified vs. claimed

Maturity stage
commercial(Commercially deployed with revenue-generating operations.)
Verified deployments
None on file
Sources on file
1 source, view all

No verified deployments on file. DEPLOY tracks independently-sourced deployment evidence separately from manufacturer capability claims.

Safety record

No incidents on record for Circular Ring 2.

Only active incidents are counted. Retracted incidents are excluded from this summary but remain reachable at their canonical URLs.

Sources (1)

  1. https://www.circular.xyz

Common questions

What is Circular Ring 2?
The Circular Ring 2 is a smart ring that collects heart rate, HRV, SpO2, skin temperature, sleep stages, and activity metrics. Circular has not published a comprehensive privacy policy addressing how biometric health data is stored, encrypted, retained, sold, or shared. Sold at approximately $299.
Who makes Circular Ring 2?
Circular Ring 2 is made by Circular, based in Paris, France, founded in 2019.
Where is Circular Ring 2 deployed?
No verified deployments of Circular Ring 2 are currently on the DEPLOY registry. DEPLOY records deployments only when verified at a named site with a primary source; absence may reflect pre-deployment, research, or manufacturer-internal use.
What is Circular Ring 2's maturity stage?
Circular Ring 2 is at the commercial stage on the DEPLOY maturity ladder (research, prototype, pilot, commercial, production). Commercial stage means production-grade deployments are operating at named customer sites.
Is Circular Ring 2 safe?
Circular Ring 2 has no incidents on record in the DEPLOY registry. This does not constitute a safety guarantee; it reflects the incidents DEPLOY has tracked and verified to date.
Methodology: Verified · 1 source (no primary) · last reviewed 2026-06-28

Verification posture

Verified

Low confidence

Review state

Stable

Last reviewed 2026-06-28

Maturity + lifecycle

Maturity stage: commercial

Lifecycle: active

Architectural position

Cohort: biometric

Sources by quality tier

1
unclassified
Unclassified source

The framework is documented at /methodology. Corrections at /corrections. Reviewer: DEPLOY editorial team.

Methodology surface for Circular Ring 2.