Oura Ring Gen 4

The Oura Ring Gen 4 in black is a sleek, minimalist smart ring designed for continuous health and wellness tracking. Crafted from lightweight yet durable titanium with a glossy black PVD finish, it offers a modern, understated look suitable for everyday wear. Its slim profile and smooth interior make it comfortable to wear 24/7, including during sleep and exercise.
The ring is packed with advanced sensors that track key metrics such as heart rate, heart rate variability (HRV), body temperature trends, blood oxygen levels (SpO₂), sleep stages, activity, recovery, and stress. Data is collected automatically and synced via Bluetooth to the Oura app on iOS or Android, where insights are presented in an easy-to-understand format.
With a battery life of up to 5–8 days and water resistance up to 100 meters, the Oura Ring Gen 4 is built for both convenience and durability.