Oura Ring 4

The Oura Ring 4, released October 15, 2024 at $349, is the fourth generation of Oura's titanium smart ring health tracker. Available in twelve sizes and six colors including a new Matte Black finish, the ring weighs between 3.3 and 5.2 grams depending on size. An Oura membership at $5.99 per month is required after the included one-month trial. The Gen 4 is the first Oura ring with a fully titanium interior, replacing the epoxy liner of previous models. Eight infrared and red LEDs alongside a temperature sensor and 3D accelerometer monitor sleep stages, heart rate, HRV, body temperature deviation, SpO2, respiratory rate, and daily activity. Smart Sensing dynamically adjusts signal frequency for improved accuracy across different wearers. New platform features include cardiovascular age estimation, pace of aging tracking, and real-time stress monitoring for Oura Peak members. The Oura Ring 4 is best suited to users who want continuous health monitoring without wearing a wristband, particularly those focused on sleep quality optimization, stress management, and daily readiness scoring. The ring form factor makes it unobtrusive for all-day and sleep tracking, and the Oura app delivers one of the most detailed sleep stage and HRV trend analyses available from any consumer wearable.