Oura Ring 4 – Stealth – Size 9 – Smart Ring – Size First with Oura Ring 4 Sizing Kit – Sleep Tracking Wearable – Heart Rate – Fitness Tracker – Up to 8 Days of Battery Life

Price: $552.40
(as of Feb 09, 2026 04:25:56 UTC – Details)


Introducing Oura Ring 4: the latest evolution of the revolutionary smart ring. Oura Ring 4 brings you closer to what matters most — your health. The updated all-titanium design is powered by Smart Sensing, a new sensing platform that doesn’t just measure your biometrics, it adapts to you, providing insights into over 30 biometrics including sleep, readiness, activity, heart health, stress, and women’s health. Oura Ring 4 quietly and comfortably monitors your health and with up to 8 days of battery life — you can forget it’s even on. Sleeker, smarter and more accurate than ever, Oura Ring 4 is made for you. Oura Ring 4 is FSA/HSA Eligible — we can accept FSA or HSA funds for the following: Oura Ring 4, additional chargers, and shipping. IMPORTANT: Size yourself with the Oura Ring 4 Sizing Kit before you buy — Oura Ring 4 is not US standard sizing, and finding the right size will result in the best experience possible. With an Oura Ring 4 sizing kit purchase, a $10 credit will automatically be applied to your Oura Ring 4 at checkout.
Measure before purchasing: the Oura ring 4 sizes differ from the standard ring sizes. Compete with the Oura Ring 4 Sizing Kit and get a 10 EUR Amazon credit for the future purchase of an Oura Ring 4.
OURA – Membership – The first month of membership is free with your purchase, then 5.99 EUR/month. Offer is valid for new members only. Or opt for the annual prepaid option for 69.99 EUR.
Accuracy – Smart Sensing – Oura records more than 30 biometric data, including sleep, activity, stress, heart health and women’s health metrics. The Oura Ring 4 is equipped with Smart Sensing that adapts to you.
Long-lasting battery – with a battery life of up to 8 days, without screen and no vibrations, the Oura Ring 4 allows you to focus on the present. Whether training or in the evening when going out.
Designed for 24/7 wear – The updated design of the Oura Ring 4 is even more comfortable, fits better than ever and is waterproof. The first titanium smart ring combines exceptional durability with a gentle touch.