Oura Ring 4 Leak Reveals Game-Changing Health Sensors and Longer Battery—Here’s What to Expect

The Oura Ring 4 just got a style overhaul, and the timing couldn’t be better for fans of discreet health wearables. Oura has unveiled a vibrant Ceramic Collection that wraps the brand-new Gen 4 hardware in glossy pastel finishes—an aesthetic shift designed to lure fashion-forward users who’ve been eyeing upcoming rivals like Samsung’s Galaxy Ring. What’s new in Oura Ring 4 • Smart Sensing engine: Fourth-gen infrared PPG sensors and a new temperature matrix boost signal quality by 120 percent, delivering 30 percent more accurate overnight SpO₂ readings and 15 percent tighter HRV tracking. • Recessed sensor layout: Optical modules now sit flush with the titanium chassis, reducing light leakage and improving comfort for side sleepers. • Wider sizing & lighter build: Sizes 4–14 and a trimmed 4 g starting weight mean a better fit for smaller fingers without sacrificing battery life. • Automatic workout detection: Gen 4’s motion AI spots 30+ exercise types and adds calorie burn to the Oura app without manual tagging. • Ceramic finishes & charging case: New Rose Quartz, Midnight Blue, Sage, and Sand shades arrive alongside a matching ceramic charging case that tops up the ring to 100 percent in 40 minutes. Release date and price The Ceramic Collection ships October 15 2025 in the U.S., U.K., Canada, and Australia, with global expansion slated for November. Pricing starts at US $499 / £479 / AU $799, including six months of Oura Membership; existing Gen 4 owners can buy the ceramic ring solo for $349. Why it matters Smart rings are poised to become the next big battleground in wearable tech. Market analyst Counterpoint projects ring shipments to triple by 2028 as consumers seek continuous health insights without wrist bulk. By adding fashion-centric colors and improved accuracy, Oura is cementing its first-mover advantage before heavyweight electronics brands enter the fray. Early impressions Hands-on reviewers praise the Gen 4’s discreet profile and more responsive readiness scores, though the subscription fee—$5.99 per month after the initial trial—remains a sticking point. Battery life still averages four to five days, slightly undercutting the seven-day stamina boasted by Oura’s main indie rival, RingConn. Upgrade path for Gen 3 owners Oura will roll out Smart Sensing features, automatic workout detection, and the new Oura Circles social dashboard to Gen 3 units via a firmware update later this year. However, recessed sensors, the lighter chassis, and the ceramic colors remain Gen 4 exclusives. Bottom line The Oura Ring 4 Ceramic Collection blends elevated style with the company’s most accurate sensor suite yet, positioning Oura to defend its crown in the fast-heating smart-ring market. If you’ve been holding out for a ring that looks as good as it tracks, October 15 might be your cue to hit “add to cart.”