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Oura Ring 4 is a screenless tracker for sleep, recovery, and longer-term wellness patterns, not a replacement for a smartwatch or dedicated fitness tracker. Its recessed sensors, all-titanium body, and broad size range are key reasons to consider it; detailed app insights require a paid membership. Since Ring 5 launched in 2026, Ring 4 is best considered when its fit and price make it a better value.
What Oura Ring 4 tracks
Ring 4 records signals used for sleep and activity reporting, including heart rate, temperature, and blood oxygen. With an active membership, the app offers Readiness, Sleep, and Activity scores, detailed metrics, trend reports, and personalized insights. Oura also lists features such as stress, automatic activity detection, heart-health metrics, and women’s-health features; availability can vary by country and rollout.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
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OURA Ring 4 Smart Ring - Silver - Size 9 | $349.00 | Buy on Amazon |
| 2 |
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OURA Ring 4 Smart Ring - Stealth - Size 11 | $349.00 | Buy on Amazon |
| 3 |
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OURA Ring 4 Smart Ring - Silver - Size 8 | $349.00 | Buy on Amazon |
| 4 |
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10 Pack Ring Cover Compatible with Oura Ring Gen 4/4 Ceramic/Gen 3 | $6.99 | Buy on Amazon |
| 5 |
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OURA Ring 4 Smart Ring - Silver - Size 10 | $349.00 | Buy on Amazon |
Ring 4 has no on-ring display for checking workout data. NBC Select’s reviewer cautions that it is not an effective replacement for a fitness tracker or smartwatch for exercise tracking. Treat it as a passive wellness tracker rather than a live training tool.
Design, fit, and everyday wear
Ring 4 has an all-titanium body and recessed sensors. The Independent describes its smoother interior as more comfortable than the previous generation’s raised sensor bumps. The Independent lists six finishes and sizes 4–15, with a width of 7.09 mm, thickness of 2.8 mm, and weight from 3.3 to 5.2 g. These specifications are reported by The Independent, not a measure of health performance.
#1 Best Overall
- 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 you — delivering accurate, continuous data, day and night
- ACCURATE SIZING ESSENTIAL - Oura Ring 4 uses unique sizing different from standard jewelry rings; use the Oura Ring 4 Sizing Kit to find your perfect fit before purchasing
- LONG LASTING BATTERY - With up to 8 days of battery life, no screens and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Until you start getting compliments
- OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Membership is tied to your account via the Oura App, not your physical ring
- HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping
Use Oura’s sizing guidance before ordering, particularly if you are moving from Gen 3: the size ranges differ. The ring requires its size-specific charging setup; check current Oura instructions for charger compatibility.
Battery life and charging
Oura’s stated maximum battery life is up to eight days, but actual duration depends on ring size, settings, age, activity, and use, according to Oura’s product guidance. The Independent reviewer reported about six days with features enabled, and a full recharge took over an hour in that review. Those are reviewer observations, not guaranteed results.
Ring 4 charges on a wired dock. Consider whether you are comfortable removing the ring periodically to charge it, and check the included charger and cable details for the size you buy.
Rank #2
- 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 you — delivering accurate, continuous data, day and night
- ACCURATE SIZING ESSENTIAL - Oura Ring 4 uses unique sizing different from standard jewelry rings; use the Oura Ring 4 Sizing Kit to find your perfect fit before purchasing
- LONG LASTING BATTERY - With up to 8 days of battery life, no screens and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Until you start getting compliments
- OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Membership is tied to your account via the Oura App, not your physical ring
- HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping
Ring 4 and Ring 5 compared
Ring 5 launched in 2026. Current comparisons describe it as slimmer and lighter, with a claimed battery ceiling of up to nine days. Many tracking and app capabilities are shared or announced for Ring 4 too, so compare actual fit, price, and features rather than assuming the newer model has exclusive tracking.
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Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →| Consideration | Oura Ring 4 | Oura Ring 5 |
|---|---|---|
| Model position | Prior model; may be a value choice if discounted | Newer model, launched in 2026 |
| Reported size range | 4–15, reported by The Independent and NBC Select | 6–13, reported by current comparisons |
| Claimed maximum battery life | Up to eight days, Oura claim reported by The Independent and current comparisons | Up to nine days, as reported by current comparisons |
| Design | Recessed sensors and all-titanium body | Described by current comparisons as slimmer and lighter |
| Tracking and app features | Many features announced for Ring 5 are also announced for Ring 4; availability and rollout can change | Many capabilities are described as largely alike to Ring 4 |
Before choosing, compare your size availability, local price and discounts, comfort, battery claims, membership cost, and whether a feature you want is specific to the hardware or shared through software. Ring 4 can make sense if it fits and costs less; Ring 5 is the newer design if its dimensions or higher claimed battery ceiling matter more to you.
Membership and total cost
Oura’s U.S. membership documentation, last updated September 8, 2026, lists prices of $5.99 per month or $69.99 per year. New members receive one month with a new ring purchase. Regional pricing and membership availability vary.
Rank #3
- 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 you — delivering accurate, continuous data, day and night
- ACCURATE SIZING ESSENTIAL - Oura Ring 4 uses unique sizing different from standard jewelry rings; use the Oura Ring 4 Sizing Kit to find your perfect fit before purchasing
- LONG LASTING BATTERY - With up to 8 days of battery life, no screens and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Until you start getting compliments
- OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Membership is tied to your account via the Oura App, not your physical ring
- HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping
Without an active membership, Oura says the app shows only the three daily scores—Readiness, Activity, and Sleep—along with ring battery, basic profile information, app settings, and Explore content. Detailed insights therefore come with an ongoing cost. Add the ring’s local purchase price to the membership plan you expect to use when comparing total cost.
Current third-party comparisons report a U.S. Ring 4 starting price of $349, but official live pricing was not confirmed in the research for this review. Check the current price and availability before buying.
What the evidence can—and cannot—tell you
Product specifications and editorial reviews support evaluating Ring 4’s design, reported battery experience, and app offering. They do not establish clinical diagnostic accuracy or health outcomes. Treat sleep and wellness metrics as personal tracking information, not a diagnosis or a substitute for medical care.
Rank #4
- 【Compatibility】The silicone ring cover compatible with Oura Ring Gen 4/4 Ceramic, Oura Ring Gen 3 Horizon/Heritage. It is available in a variety of sizes. Please choose S for size 4/5/6/7, M for size 8/9/10/11, L for 12/13/14/15. (Note: Ring is NOT included)
- 【Charging Hole Design】Specially design for charging without removing the cover. The ring cover is designed with a charging hole for the ring dimple. Align the hole of the ring protector with the ring dimple. You can charge your ring without any hassle of taking ring cover on and off.
- 【Anti-scratch】The silicone ring protector fully encases the smart ring for optimal protection. It is essential for protecting your Oura ring from scratches, dents while working out, doing chores, lifting weights, sporting events and daily wear.
- 【Comfortable & Skin-Friendly】The Oura ring cover is made from premium soft and odorless high quality silicone. It is comfortable & skin-friendly, breathable & washable, durable & elastic. It won't cause allergies or discomfort to your fingers.
- 【Multi Color Choice】Package includes many ring protectors in different colors. You can change the ring cover for your smart ring every day according to your mood or outfit. It only takes a few seconds to give your smart ring a new look.
Who should consider Oura Ring 4?
- Consider it if you want discreet overnight tracking, prefer a ring to a wrist wearable, and find a suitable size at a worthwhile price.
- Compare it carefully with Ring 5 if you need a size outside Ring 5’s reported range or are prioritizing the newer design.
- Look elsewhere or use another device alongside it if you need live workout feedback, a display, or a full exercise-watch replacement.
- Include membership in your decision if you want detailed metrics and personalized insights.
FAQ
Can I use Oura Ring 4 without an Oura Membership?
Yes, but Oura says the app is limited to the Readiness, Activity, and Sleep scores, ring battery, basic profile information, app settings, and Explore content without an active membership.
How long does Oura Ring 4 battery last?
Oura’s stated maximum is up to eight days, but that is not a guarantee. The Independent reviewer reported about six days with features enabled; actual battery life varies with size, settings, age, activity, and use.
Is Oura Ring 4 good for exercise tracking?
It can record activity-related signals, but it has no on-ring display for live workout metrics. NBC Select’s reviewer cautions that it is not an effective replacement for a fitness tracker or smartwatch for exercise tracking.
Best Value
- 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 you — delivering accurate, continuous data, day and night
- ACCURATE SIZING ESSENTIAL - Oura Ring 4 uses unique sizing different from standard jewelry rings; use the Oura Ring 4 Sizing Kit to find your perfect fit before purchasing
- LONG LASTING BATTERY - With up to 8 days of battery life, no screens and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Until you start getting compliments
- OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Membership is tied to your account via the Oura App, not your physical ring
- HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping
Should I buy Ring 4 or Ring 5?
Compare fit, current price, comfort, and battery claims. Ring 4’s reported size range is 4–15, while current comparisons report 6–13 for Ring 5. Ring 5 is described as slimmer and lighter, but many tracking and app capabilities are shared or announced for Ring 4 as well.
How should I choose a Ring 4 size?
Use Oura’s sizing guidance before ordering. The size range differs from Gen 3, so do not assume your previous Oura size will fit Ring 4.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
