Oura Ring 4 Smart Ring (Gold, Size 7)
Sleep, HRV, temperature and readiness in a titanium ring with 8-day battery: the Oura Ring 4 remains the best smart ring of 2026.
Our Verdict
A titanium smart ring tracking sleep stages, HRV, skin temperature, SpO2, stress and activity with up to 8 days of battery. No subscription for core features. 9,400+ ratings.
What We Like
- 8-day battery life
- Best-in-class sleep staging
- HRV and readiness scores
- Lightweight titanium — forget it’s on
- No screen = no distraction
Worth Knowing
- Subscription needed for some insights
- Sizing is critical — use the sizing kit
- Ring can spin on small fingers
- Premium price
Who Is This For?
People who want health tracking without a watch — especially sleep and recovery focus.
The Full Picture
Oura invented the category and the Ring 4 refined it: Smart Sensing adapts to your finger automatically, and the 8-day battery means weekly charging. Sleep staging and HRV trends are the most trusted in consumer wearables. Order a sizing kit first — fit makes or breaks a ring.
Bottom Line
The smart ring to buy in 2026 — Oura Ring 4 with 8-day battery and top sleep tracking.