Oura Ring 4 - Stealth

Oura Ring 4 - Stealth is the fourth-generation (Gen 4) smart ring designed to track sleep, activity and daily health data from the finger. The sensor bumps that could leave marks with Gen 3 are fully recessed into the ring in this generation. The plastic layer on the inner surface has also been removed, leaving titanium at every point that touches the skin. Its Stealth finish combines a matte, diamond-like carbon DLC coating with a restrained look and improved scratch resistance. Within its 7.90 mm profile is Smart Sensing technology with 18 signal paths. Red, green and infrared sensors read heart rate, HRV, breathing and blood oxygen, while a digital temperature sensor tracks changes in body temperature. The titanium construction weighs 3.3 to 5.2 grams depending on size and offers 100-metre water resistance for use in the shower, pool or sea. Battery life ranges from 5 to 8 days, with charging taking 20 to 80 minutes on its dedicated stand. Its recessed sensor construction gives it a slightly looser fit than Gen 3. It is available in whole sizes 4 to 15, so sizing with the Oura Ring 4 Sizing Kit is recommended before ordering. The ring works with iOS and Android, connecting to more than 40 apps including Apple Health and Strava. An Oura Membership is required for the full suite of sleep and health insights. Stealth is among the harder-to-find Oura Ring 4 variants in Turkey. sutore offers it following an authenticity check, as a quiet addition to daily style.