Oura JZ90-54217-11 Smart Ring: Sleep tracking wearable
Meet the Oura Ring 4 – it's not just a smart ring, it's like having a mini health lab wrapped around your finger. This bad boy comes in a sleek all-titanium design that's tougher than your last gym session. Thanks to Smart Sensing, it's got this uncanny ability to learn your rhythms, dishing out insights on everything from how well you slept to whether you're stressing over nothing (again). And with battery life that laughs in the face of your smartphone's pitiful endurance, you might just forget you're wearing it – until it tells you to take a breather.
Here’s the lowdown on what makes it tick:
- It’s like the Oura Ring 3 went to the gym, got a PhD, and came back looking sharp.
- Built to survive your 24/7 hustle, because let’s face it, you’re not taking it off.
- Water-resistant and kind to your skin, because comfort shouldn’t be an afterthought.
- Plays nice with over 40 apps (Apple Health and Google Health Connect are in its social circle).
- And yes, your HSA/FSA can cover the ring, chargers, and even shipping – because health is wealth, right?
Heads up: Don’t skip the Oura Ring 4 Sizing Kit. Trust us, getting the right fit is the difference between 'this is amazing' and 'why did I not listen?'
- Heart rate monitor
- Fitness tracker
- Up to 8 days of battery life
- Smart Sensing technology
- 24/7 wear design
- Water resistant
- Sync with favorite apps
- HSA/FSA eligible
- Sleep tracking wearable
General specs
- Brand: Oura
- Model: JZ90-54217-11
- Seller: Amazon
- product_dimensions: 1.1 x 1.1 x 0.28 inches
- item_weight: 7 ounces
- batteries: 1 Lithium Polymer batteries required. (included)
- other_display_features: Wireless
- whats_in_the_box: Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide
- manufacturer: Oura
- country_of_origin: Estonia
- date_first_available: October 3, 2024
- First listed by seller: 5/29/25
If you are interested in more details, you can find full information on the seller's page.
Buy on Amazon
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Shipping options
United States
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
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Oura JZ90-54217-11 Sleep tracking wearable
|
Oura JZ90-1003-06 Sleep tracking wearable
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Oura JZ90-54217-10 Accurate biometric tracking
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Oura JZ90-54144-11 Accurate biometric tracking
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Oura JZ90-54217-09 Accurate biometric tracking
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Oura JZ90-1003-09 Sleep Tracking
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|
| Brand | Oura | Oura | Oura | Oura | Oura | Oura |
| Model | JZ90-54217-11 | JZ90-1003-06 | JZ90-54217-10 | JZ90-54144-11 | JZ90-54217-09 | JZ90-1003-09 |
| Color | ||||||
| Rating |
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| Price | $349.00 | $199.00 | $349.00 | $349.00 | $349.00 | $199.00 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | July 19, 2025 | June 27, 2025 | August 5, 2025 | June 29, 2025 | July 18, 2025 | June 28, 2025 |
| product_dimensions | 1.1 x 1.1 x 0.28 inches | 1.06 x 1.06 x 0.28 inches | 1.1 x 1.1 x 0.28 inches | 1.02 x 1.02 x 0.28 inches | ||
| item_weight | 7 ounces | 6.3 ounces | 6.7 ounces | 6.3 ounces | ||
| batteries | 1 Lithium Polymer batteries required. (included) | 1 Lithium Polymer batteries required. (included) | 1 Lithium Polymer batteries required. (included) | 1 Lithium Polymer batteries required. (included) | ||
| whats_in_the_box | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide | ||
| manufacturer | Oura | Oura | Oura | Oura | ||
| country_of_origin | Estonia | Estonia | Estonia | Estonia | ||
| date_first_available | October 3, 2024 | October 3, 2024 | October 3, 2024 | October 3, 2024 | ||
| connectivity_technologies | Bluetooth | Bluetooth | Bluetooth | |||
| special_features | Heart Rate Monitor, Activity Tracker | Heart Rate Monitor, Stress Monitor | Heart Rate Monitor, Activity Tracker | |||
Isabella L.
Birmingham
June 6, 2025
as a mum with a young child, i bought this to keep an eye on my health amidst the chaos, and it's been a game-changer. i started using it a couple of weeks ago, and it's already helped me notice patterns in my sleep that i was ignoring. for example, it pointed out that i was most likely not resting enough on busy days, which prompted me to take more breaks. the ring is sleek and doesn't get in the way, and i appreciate how it blends into daily life without feeling intrusive. though it took some time to get used to wearing it constantly, the benefits in understanding my body's signals have been incredibly valuable. i'd recommend it to others looking for a subtle health monitor :)
- Pros: i found it incredibly comfortable to wear all the time, even when sleeping or washing my hands, and it's built like a tank, so i don't worry about it getting damaged. the insights on my sleep and stress levels are surprisingly accurate, and it syncs well with other health apps i use, making it easy to track everything in one place.