Oura Ring 4 review: Discreet smart health tracker with accurate sleep, stress and heart insights

The Oura Ring 4 blends health tracking with a discreet design. From sleep and stress monitoring to week-long battery life, it offers detailed insights in a lightweight titanium band.

The Oura Ring 4 combines health tracking and subtle design in a lightweight titanium band. Picture: Oura.

Smart rings are a discreet alternative to wrist-worn trackers, and the Oura Ring 4 is one of the most advanced yet. It combines accurate sleep tracking, stress monitoring and health insights in a lightweight titanium band that features 24-hour data without the distraction of a screen.

Design and build