Oura unveiled the Ring 5, a wearable that’s 40% smaller than its predecessor while keeping the same battery capacity. The new profile replaces the bulkier sensor domes with lower‑profile LEDs, delivering tighter skin contact and steadier readings. Reviewers who tried the device say its ultra‑thin band makes it feel like ordinary jewelry rather than a tracker.

During two days of wear, the author found the Ring 5 virtually unnoticeable, even while weight‑lifting where the older Ring 4 would pinch or scrape. The slimmer chassis also appears more resistant to scuffs, a common complaint for earlier models. Automatic activity detection has been refined, correctly logging yard work and low‑motion sessions such as Pilates.

The Ring 5 carries a $50 premium over the Ring 4, a modest hike given the design overhaul. Access to full health metrics still requires a $5.99‑monthly subscription, which can be paid with HSA/FSA funds. With its sleek form, improved sensors, and smarter activity logging, the device positions itself as the preferred smart ring for health‑focused consumers.

Industry observers note that Oura’s ability to shrink the hardware without sacrificing battery life challenges the notion that wearables must be bulky to be functional. By delivering a near‑invisible device, Oura may broaden appeal beyond fitness enthusiasts to users who prioritize aesthetics, potentially shifting market expectations for future health‑tracking accessories.