Oura - Ring 4 Ceramic - Smart Ring - Size Before You Buy with OR4 Sizing Kit - Size 8 - Cloud - (2025)
Ships from Best Buy®
JZ90-57460-
Product Overview
First month of membership is on us with your purchase 5.99/mo afterwards. Offer available to new members only. Take advantage of the annual prepaid option for 69.99. Membership is tied to your account accessible via the Oura App not your physical ring.
Size Before You Buy
Order an Oura Ring 4 Sizing Kit or visit a Best Buy store to find your optimal size then return to BestBuy.com to buy your Oura Ring.
Ceramic Material
Thoughtfully crafted in high-performance zirconia ceramic Oura Ring 4 Ceramic combines refined elegance with everyday durability. Each ceramic Oura Ring goes through a traditional firing process that strengthens the material and gives it a smooth polished finish — built to last.
Accuracy - Smart Sensing
Oura tracks over 50 health metrics including sleep activity stress heart health and women’s health metrics. Oura Ring 4 is powered by Smart Sensing which adapts to your unique finger and activity — delivering accurate continuous data day and night.
Battery
With 5 to 8 days of battery life no screens and no vibrations Oura Ring 4 Ceramic allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Unti
Description
Specs
Length: 1.4 in
Width: 4.4 in
Height: 4.5 in