The Compact Power of Oura Ring 5 Unpacked

The Oura Ring 5 has arrived with a bold promise: smaller size without losing power. It is 40 percent smaller than the Oura Ring 4. That means it measures just 6.09mm wide and 2.28mm thick. For anyone who found previous models bulky, this is a game-changer.

Weighing about 2 grams in its lightest size, the Ring 5 is barely noticeable on your finger. Despite shrinking, the ring still holds up well in battery life. It lasts between six and nine days, an improvement over the Ring 4’s five to eight days. That’s a welcome boost for anyone who wants less charging hassle.

Oura announced the Ring 5 on 28 May 2026. It reached UK shelves shortly after, on 4 June 2026. The ring comes in several finishes. Silver and Black versions cost £399. Premium finishes like Gold, Stealth, Brushed Silver, and Deep Rose go for £499. For those wanting extra convenience, an optional charging case is available for £99.

Improved Sensors, Same Core Hardware

While the ring’s size shrank, its sensor setup got a thoughtful redesign. The Ring 5 features two photodetectors, two sets of triple LEDs, a temperature sensor, and an accelerometer. These sensors track steps, exercise, heart rate, sleep, stress, and body temperature.

The hardware isn’t drastically different from the Ring 4. But the sensors have been tweaked to improve accuracy. This means better monitoring without changing the core technology. The focus was on comfort and convenience, not reinventing the wheel.

One reviewer said the smaller size was shocking at first, but the ring still fits the same finger size as before. Another pointed out the smaller ring as the main upgrade, highlighting how Oura kept performance steady despite the drop in size.

Software Steps Up Health Monitoring

The Ring 5 uses software to track your health trends with features like Health Radar. This builds on earlier tools like Symptom Radar. It helps spot early signs of illness before they get serious.

Some features have limits, like blood pressure trend tracking, which only works in certain regions. Still, the sleep tracking provides detailed summaries and scores. This gives users a clearer picture of their nightly rest.

One note to consider: the ring’s full functionality depends on an Oura Membership. Without it, the ring turns into a basic tracker. Membership costs £5.99 per month or £69.99 per year. This subscription unlocks the deeper insights and health monitoring features.

Besides the size and sensor tweaks, the ring also improved its waterproof rating. The Ring 5 is waterproof up to 100 meters. This adds peace of mind for swimmers and those who don’t want to remove their ring often.

Overall, the Oura Ring 5 takes a familiar device and makes it more wearable. It shrinks down without losing key features. The battery life, sensors, and software all combine to keep it a strong health companion. If you want a smart ring that’s lighter and sleeker, the Ring 5 is worth a look.