Oura
Oura Ring Gen 4 - Heritage
Premium smart ring for sleep, HRV, and daily readiness — no subscription needed for the basics.
Overview
What it is
A continuous biometric tracker designed to surface sleep, recovery, and activity patterns over time.
Continuous biometric tracking on your wrist or finger. Sleep, HRV, readiness, activity — the entry point into the quantified self.
Editorial note
We have not independently lab-tested this product. Our review is based on the manufacturer's specifications, public clinical evidence where available, and category-level reasoning. We link to the retailer with our affiliate tag and earn a small commission on qualifying purchases.
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