Oura Ring 4
Manufacturer information and editorial guidance. Ninaix has not tested the devices. Historical source dates are retained.
Oura Ring 4 is an earlier Oura generation. Oura gives this battery estimate: Typically 5 to 8 days for new rings. Ninaix has not measured its performance.
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At a glance
A ring centered on sleep and recovery trends. Its published app features overlap with Ring 5, so compare fit, membership and retailer search results before upgrading.
Features
- Oura app includes sleep and recovery trends
- Manufacturer battery estimate: Typically 5 to 8 days for new rings
Product information retained from the earlier publication; consult the linked sources for scope and limitations.
Battery
Oura gives this battery estimate: Typically 5 to 8 days for new rings. It applies to new rings and varies with size, settings, features, activity, battery age and use. This is not a Ninaix test result.
App and membership
Oura's membership page says membership applies to Gen3 and newer rings, and that without it the app shows three daily scores, ring battery, basic profile information, app settings and Explore content. Check which features your ring supports.
Requirements and limits
- Membership unlocks the full app feature set
- Actual battery life varies by size, settings and use
Product information retained from the earlier publication; consult the linked sources for scope and limitations.
Keep reading
Sources
- Oura battery guidance, page last updated October 7, 2026
- Oura membership guidance, page last updated October 16, 2026
Method note. This product overview draws on the identified published sources. Ninaix has not tested this device. Source labels distinguish source-page update dates, reading dates and historical source dates. A source-reading date is not approval of this page. Consult the linked sources for their scope and limitations.