Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
Oura JZ90-54217-11 Silver, size 11 Health & Fitness Smart Ring
Available offers (8)
Current
Silver, size 11
Retailer
€310.58
Available to order
Price history by offer
Volatility: MediumFeatures
- Tracks over 50 health metrics
- Up to 8 days battery life
- All-titanium, water resistant design
- Adaptive Smart Sensing technology
- Compatible with Android and iOS
General specs
- Brand: Oura
- Model: JZ90-54217-11
- Seller: Retailer
- ID: B0D9WW49PJ
- Size: 11
- Brand: OURA
- Model: Oura Ring 4
- Width: 1.1023622036 inches
- Height: 0.2755905509 inches
- Length: 1.1023622036 inches
- Sizing: Unique sizing, requires Oura Ring 4 Sizing Kit for fit before purchase
- Weight: 0.011464037624 pounds
- Comfort: Improved comfort, gentle for sensitive skin
- Display: No screen
- Material: Titanium
- AI Advisor: Yes
- Durability: Exceptional durability
- Membership: First month free for new members, then $7.99/month
- Vibrations: No
- Battery Life: 5 to 8 days
- Designed For: 24/7 wear
- Release Date: 2024-10-15
- Compatibility: Android, iOS
- Smart Sensing: Adaptive technology for accurate, continuous data
- Health Metrics: Tracks over 50 health metrics including sleep, activity, stress, heart health, metabolic health, and women's health
- Number of Items: 1
- Water Resistance: Water resistant
- First listed by seller: May 29, 2025
If you are interested in more details, you can find full information on the seller's page.
Price History for seller Retailer
Shipping options
Delivery to 
United States
United States
Available
You put on the Oura Ring 4 in the morning and forget it’s there. Unlike a smartwatch, it has no screen to distract you. As a working parent, you need health insights that don't demand your attention. The ring tracks sleep, activity, and stress while you focus on your day. Smart Sensing technology adapts to your finger for accurate data.
After a few nights, you notice a trend: your deep sleep increases when you go to bed before 10:30 PM. That small shift, suggested by Oura’s daily readiness score, makes your mornings easier. The ring detects subtle changes, such as a slightly elevated resting heart rate, and the AI advisor gives context before you even feel off.
With up to 8 days of battery life, you wear it through workouts, showers, and sleep. The titanium build feels light and smooth, never irritating. Remember to use the sizing kit first, because Oura sizes differ from standard rings. The first month of membership is free; $7.99 per month after that keeps your data flowing in the app.
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Oura JZ90-54217-11 Silver Tracks over 50 health metrics
|
Herz P1 Tracks 20+ biometrics
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| Brand | Oura | Herz | Oura | Oura | Amwentu | Shenzhen Yawell Intelligent Technology Co.,Ltd |
| Model | JZ90-54217-11 | P1 | JZ90-1003-06 | JZ90-1003-09 | BJ02 | R06 |
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| Price | €310.58 | €53.39 | €299.21 | €266.08 | €19.47 | €35.59 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Mar 21, 2026 | May 9, 2026 | Mar 21, 2026 | Mar 21, 2026 | Apr 15, 2026 | May 1, 2026 |
| batteries | 1 Nonstandard Battery batteries required. (included) | 1 Lithium Ion batteries required. (included) | 1 Lithium Ion batteries required. (included) | 1 CR5 batteries required. | 1 Lithium Polymer batteries required. (included) | |
| Item Weight | 0.127 ounces | 7.8 ounces | 7.8 ounces | 2.39 ounces | 2.39 ounces | |
| Package Dimensions | 15.55 x 12.56 x 9.33 inches | 3.15 x 3.11 x 1.02 inches | 4.02 x 3.11 x 1.26 inches | |||
| manufacturer | Oura | Oura | Amwentu | |||
| Country of Origin | Estonia | Estonia | China | China | ||
| Date First Available | January 19, 2024 | January 19, 2024 | January 4, 2025 | |||
Oura JZ90-54217-11 Silver Tracks over 50 health metrics
€310.58
When this device makes sense
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