1 / 7OURA Ring 5 Stealth Size 13 Smart Ring
The OURA Ring 5 is a Stealth-finish smart ring in size 13, listed with sleep, activity, heart-rate and blood-oxygen tracking. It has no display, and the listing says to use the Ring 5 sizing kit because its sizing differs from standard jewellery rings.
At a glance
- Tracks sleep, activity, heart rate, blood oxygen and skin temperature according to the listing.
- Bluetooth connection and compatibility listed for iOS and Android devices.
- The listing claims up to 8 days of battery life and an 80-minute charge time.
- Size 13 is a fixed size choice. The listing says this ring uses sizing that differs from standard jewellery rings.
Pros and cons
Pros
- A screen-free ring format keeps the listed sleep and activity tracking in a wearable without a display.
- The listed sensors cover several everyday wellness measurements, including sleep, activity, heart rate and skin temperature.
- The listing's 8-day battery claim means charging is not described as a daily task.
Cons
- No display means readings and insights are not shown directly on the ring.
- Cellular connectivity is listed as unsupported, and the ring uses Bluetooth to connect with a compatible smartphone.
- The selected size may not fit without checking the Ring 5-specific sizing guidance first.
Technical specifications
27 specifications| Brand | OURA |
|---|---|
| Model | Oura Ring 5 Stealth - Size 13 |
| Colour | Stealth |
| Audience | Unisex Adults |
| Listed features | Activity Tracker, Blood Oxygen Monitor, Heart Rate Monitor, Skin Temperature, Sleep Tracking |
|---|---|
| Metrics measured | Heart Rate |
| Compatible phone models | Compatible with iOS and Android devices. |
| Supported application | App-enabled-rings |
| Screen technology listed | No Display |
|---|
| Wireless connection listed | Bluetooth |
|---|---|
| Cellular technology | Not Supported |
| Operating system | Proprietary OURA Firmware |
| Battery life listed | 8 days |
|---|---|
| Battery capacity | 12 Milliamp Hours |
| Battery cell type | Lithium Polymer |
| Charge time | 80 Minutes |
| Form factor | Round |
|---|---|
| Dimensions listed | 6 x 6 x 2 millimetres |
| Weight listed | 0.06 Kilograms |
| Band length | 67.2 Millimeters |
| Band material | Titanium |
|---|---|
| Water resistance listed | Water Resistant |
| Water resistance depth | 100 Meters |
| Waterproof rating | IP68 |
| Storage listed | 32 MB |
|---|
| Warranty description | 2 Year Manufacturer Warranty |
|---|---|
| Warranty type | Limited |
What to know before buying
Listing details to confirm
Sizing is essential. The listing says Ring 5 sizing differs from standard jewellery sizing and recommends using the Oura Ring 5 Sizing Kit before purchase. It also claims one month of membership for new Oura members. Technical details are inconsistent: GPS is listed both as unsupported and as a supported satellite navigation system, and water protection is described as Water Resistant, 100 Meters and IP68. The listed dimensions are also unusually small for a ring, so confirm these details against the selected listing before relying on them.
Who is it for?
A good fit for
- Buyers seeking a screen-free ring for sleep, activity and wellness tracking through a smartphone.
- People whose size has been confirmed using Oura Ring 5 sizing guidance.
- iOS or Android smartphone users who are comfortable using Bluetooth and an app for ring data.
Less suited to
- Buyers who need a screen or cellular connectivity on the wearable.
- Anyone who wants a standard jewellery-ring sizing assumption or has not confirmed that size 13 fits.

Customer reviews on Amazon
- 5 stars
80% 80% - 4 stars
7% 7% - 3 stars
5% 5% - 2 stars
2% 2% - 1 star
6% 6%
Customer feedback reports positive experiences with sleep tracking, battery life and the amount of information gathered from the ring. Views on functionality and value are mixed, with some reports of heart-rate sensor and connectivity issues. For buyers considering this screen-free tracker, those reports make app connection and dependable readings important factors to weigh alongside the listing's tracking features and claimed 8-day battery life.
Positive themes
- Customers report positive experiences with sleep tracking and the information gathered from the ring.
- Battery life is also mentioned positively, including a report of about a week with quick charging.
Negative themes
- Connectivity concerns are reported.
- Some customers report issues with the heart-rate sensor.
Mixed feedback
- Customers express mixed views about functionality and whether the ring is worth its cost.
Frequently asked questions
Does this ring show information on its own screen?
No. The listing specifies No Display, so use a compatible smartphone to access ring data.
Should I assume size 13 matches a standard jewellery ring?
No. The listing says Oura Ring 5 sizing differs from standard jewellery sizing and recommends using the Ring 5 Sizing Kit before buying.
How long does the battery last?
The listing claims 8 days and gives a charge time of 80 minutes. These are listing specifications, not independently verified results.
Is GPS included?
The listing is contradictory: it says No GPS in one field and lists GPS under supported satellite navigation. Confirm this capability before purchase.
What comes in the package?
The listing identifies a charging dock, information booklet, Oura Ring 5 and USB cable as built-in media. Check the selected listing for the confirmed package contents.

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