Oura JZ90-54144-11 Smart Ring: Accurate biometric tracking
Meet the Oura Ring 4—your new health guru, squeezed into a sleek, all-titanium package. It's not just a ring; it's like having a mini lab on your finger, thanks to its Smart Sensing tech that keeps tabs on over 30 biometrics. From how well you slept (or didn’t) to whether you’re ready to tackle the day or just pretending, it’s got you covered. And yes, it even knows about your heart, stress levels, metabolism, and for the ladies, it’s got special insights too.
Battery life? A whopping 8 days, so you can wear it round the clock without playing the charging game every other day. Plus, it’s tough enough to handle water and smart enough to chat with over 40 apps, including Apple Health and Google Health Connect. Oh, and here’s the kicker—it’s HSA/FSA eligible. Basically, your health savings can now buy you a piece of the future.
Before you jump in, though, grab the Oura Ring 4 Sizing Kit. Because let’s face it, no one wants a health tracker that’s either cutting off circulation or flying off during a victory dance.
- Up to 8 days battery life
- All-titanium design
- Water resistant
- Syncs with 40+ apps
- HSA/FSA eligible
- Accurate biometric tracking
General specs
- Brand: Oura
- Model: JZ90-54144-11
- Seller: Amazon
- product_dimensions: 1.1 x 1.1 x 0.28 inches
- item_weight: 6.7 ounces
- batteries: 1 Lithium Polymer batteries required. (included)
- connectivity_technologies: Bluetooth
- special_features: Heart Rate Monitor, Stress Monitor
- other_display_features: Wireless
- human_interface_input: Buttons
- 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: 6/12/25
If you are interested in more details, you can find full information on the seller's page.
Buy on Amazon
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Oura JZ90-54144-11 Accurate biometric tracking
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| Brand | Oura | Oura | Oura | Oura | Oura | Oura |
| Model | JZ90-54144-11 | JZ90-54217-10 | JZ90-54217-09 | JZ90-54218-11 | JZ90-1003-06 | JZ90-1003-09 |
| Color | ||||||
| Rating |
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| Price | $349.00 | $349.00 | $349.00 | $399.00 | $199.00 | $199.00 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | June 29, 2025 | August 5, 2025 | July 18, 2025 | July 19, 2025 | June 27, 2025 | June 28, 2025 |
| product_dimensions | 1.1 x 1.1 x 0.28 inches | 1.06 x 1.06 x 0.28 inches | 1.02 x 1.02 x 0.28 inches | 0.98 x 0.98 x 0.31 inches | ||
| item_weight | 6.7 ounces | 6.3 ounces | 6.3 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) | ||
| connectivity_technologies | Bluetooth | Bluetooth | Bluetooth | Bluetooth | ||
| special_features | Heart Rate Monitor, Stress Monitor | Heart Rate Monitor, Activity Tracker | Heart Rate Monitor, Activity Tracker | |||
| human_interface_input | Buttons | Buttons | Touchscreen | |||
| 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 | ||
Smart Ring
Louise S.
Reims
June 19, 2025
As a software developer I'm always curious about tech that blends into daily life and this ring does that quite well I've been using it for a couple of weeks now and it's become a part of my routine I like how it monitors things like my heart rate and sleep patterns without me having to do much it just works in the background which is great for someone busy like me who enjoys cooking and needs to keep an eye on health without distractions the insights it provides are helpful for making small changes like adjusting my sleep schedule or activity levels based on how I feel the only downside is that it took some time to get the right fit and the initial setup felt a bit tedious but overall it's a solid device that delivers on its promises from what I've experienced I'd recommend it to others who are into health tech and don't mind the investment
- Pros: Frankly pretty good how it tracks my sleep and daily health without being bulky it feels quite natural to wear all the time and the battery lasts long enough that I don't worry about charging often from what I feel it integrates well with my other health apps making data easy to access and it's nice that it's durable and water-resistant