Oura Ring 4 Smart Ring

The best sleep tracker of 2026.

A titanium ring that reads your sleep staging, heart rate variability, and readiness, with an 8-day battery. No screen. No noise. Just the data.

Sleep is the foundation of everything. Measure it like you mean it.

Full insights require an Oura Membership subscription.

Specs: titanium build, sleep staging, HRV and readiness tracking, up to 8-day battery.