Oura Ring 4

If you track sleep, stress or long-term heart trends but hate wrist devices, this is the tracker most people reach for — a discreet ring that keeps an eye on sleep stages, resting heart rate, HRV and temperature without getting in the way. It targets the common problem of inconsistent night data from wrist wearables by putting clinical-grade sensing into a compact titanium band. ## What makes it worth it Oura Ring 4 packs "Smart Sensing" — an updated sensor suite and algorithms that Oura says deliver more accurate continuous heart-rate, HRV and skin-temperature data than prior generations, and independent reviews broadly call its sleep scoring best-in-class. The ring is built from lightweight titanium for all-day comfort, is water resistant to recreational dive depths (Oura lists robust water resistance), and reaches 5–8 days on a single charge depending on use, which is better than many rival smart rings. The Oura smartphone app ties those signals into long-term trends and actionable sleep and readiness scores rather than raw numbers alone. ## Where it falls short The ring is a premium-priced, single-purpose wearable — you pay for excellent sleep and health sensing, not a multi-function smartwatch — and it uses a proprietary charging puck and case rather than a universal wireless pad, which is mildly inconvenient when you travel. If you want near-invisible, clinically-oriented sleep and heart monitoring and are happy to pay for a premium tracker (and a proprietary charger), buy this; if you need smartwatch features, built-in GPS or a lower upfront price, look at GPS watches or budget fitness trackers instead.

£349