Not the prettiest interpretation of a fitness band. The only ring carrying a medical-grade ECG, haptics, contactless payment and a health engine that reads you every two minutes.
The ring reads seven raw biometrics and derives 142 metrics from them, refreshed every two minutes — the tightest interval in the category. Nothing is held back for this edition, and nothing sits behind a subscription.
The One Ring edition is a Circular Ring 3 Pro. Every capability above ships with it.
Every night it reads your body from the inside — heart rhythm, breath, temperature, movement — and tells you in the morning what the darkness took and what it gave back.
Anywhere on the map
Worn day and night
A story you can wear
Sleep, recovery, stress and rhythm, read every two minutes and explained in plain language. Kira, the coach inside the app, turns the numbers into something you can act on before breakfast.
Pair The One Ring and the Circular app changes with it. The interface takes on the edition’s ember and warm metal, your ring renders in the app as the ring you actually own, and the Tengwar runs quietly through the detail views.
Underneath, it is the same engine every Circular wearer gets. Nothing about the theme changes what is measured or how it is scored — it only changes what it feels like to open.
Today’s brief — one paragraph on what your night and your load add up to.
Chronotype zones — when to train, when to work, when to wind down.
Immunity Index — an early word when your body is fighting something.
Validation studies for the sleep and ECG algorithms are in progress, with publication expected in the coming months.
Circular Ring 3 Pro, The One Ring Edition
Gold-tone PVD over the Ring 3 Pro titanium shell, mirror polished.
Tengwar inscription cut by laser into the outer band.
Sensors, haptics, NFC, Circles and firmware identical to Ring 3 Pro.
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