Oura revealed the Ring 5 smart ring on May 28, 2026, opening preorders ahead of shipments set to begin on June 4 [1, 2, 3, 4, 5, 6]. The new ring is 40% smaller than its predecessor, the Ring 4, with a design that is thinner and lighter, reducing width by about two millimeters and thickness by roughly 30% to meet user demand for a slimmer device, Oura’s VP of Product Maz Brumand said [1, 4, 6, 1].

The Ring 5 is available in sizes 6 to 13, a narrower range than the Ring 4’s 4 to 15, and requires a new sizing kit for proper fit due to its redesigned form [1, 5]. It starts at $399 for base colors Black and Silver, with premium options like Gold, Deep Rose, Stealth, and Brushed Silver priced at $499 [1, 2, 3, 4, 5, 6].

Oura CEO Tom Hale emphasized the user benefits, stating, "By reimagining Oura Ring 5 to be smaller, easier to wear, and pairing it with our most advanced software yet, we're making it possible for many more people to wear Oura every day — and to benefit from the personalized, predictive health insights that come with it" [4].

The ring features upgraded sensors with more powerful LEDs—four times brighter than before—and redesigned internal architecture that reduces signal pathways from 18 to 12, boosting tracking accuracy while improving power efficiency, according to Oura VP Jason Russell [3, 6]. Battery life extends to 6-9 days per charge, up from 5-8 days on the Ring 4 [1, 2, 3, 6]. The titanium exterior uses a new PVD coating to improve scratch resistance and supports water resistance to 100 meters with an IP68 rating [3].

Oura also introduced a new portable charging case compatible with Ring 5, sold separately for $99 [3, 4, 5]. A membership subscription costing $5.99 monthly or $69.99 yearly is needed to access the ring’s full feature set, including new software functions like Health Radar for blood pressure and breathing disturbance monitoring, live activity tracking, and AI-enabled coaching through a Counsel Health partnership [1, 2, 3, 4, 5].

Oura has confidentially filed for an IPO with the SEC but has not announced any timeline for a public offering [4].