Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
Oura Ring 4 Ceramic Midnight, size 5 Smart Ring / Health Tracker
Available offers (8)
Current
Ceramic Midnight, size 5
Newegg
€320.36
Available to order
Price history by offer
Volatility: MediumFeatures
- Color: Ceramic Midnight
- Size: 5
General specs
- Brand: Oura
- Model: Ring 4
- Seller: Newegg
- ID: 9SIAKTXM5Y7369
- Size: 5
- Brand: Oura
- Model Name: Ring 4
- Part Number: JZ90-57455-05
- Product Type: Smart ring / health tracker
- First listed by seller: October 6, 2026
If you are interested in more details, you can find full information on the seller's page.
€320.36
Last price update: 10/6/26
Available to order
Shipping options
Delivery to 
United States
United States
Available
Smart ring / health tracker in Ceramic Midnight, size 5.
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Oura Ring 4 Ceramic Midnight Color: Ceramic Midnight
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| Brand | Oura | Luxelle | SHGMEET | AYATAHA | S SECRETTOP | Govllfoz |
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| Price | €320.36 | €30.05 | €53.39 | €13.35 | €177.97 | €53.39 |
| Seller | Newegg | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Oct 17, 2026 | May 20, 2026 | May 29, 2026 | May 20, 2026 | May 29, 2026 | May 20, 2026 |
| Size | 5 | 11 | 11 | 13 | 9 | |
| Battery Life | 5-7 days continuous use, 10 days standby | 3-5 days | 7 days | Long | ||
| Sports Modes | 128 | 24 sports modes | Outdoor Running, Indoor Running, Outdoor Cycling, Indoor Cycling, Walking, Basketball, Football, Badminton, Swimming, Rope Skipping, Mountain Climbing, Yoga | |||
| Compatibility | iOS, Android | iOS, Android | App-based monitoring, Family Care Mode, Remote Camera Control | |||
| Health Monitoring | heart rate, blood oxygen, blood pressure, HRV, stress levels | Heart rate, Blood oxygen, HRV, Stress, Sleep stages (deep, light, REM) | Heart Rate, Blood Oxygen, Sleep, Resting Heart Rate, Heart Rate Variability, Calorie Burn | |||
| Weight | 0.12 oz | ultra-thin and lightweight | A few grams | |||
| Waterproof Rating | IPX8 | IP68 | IP68 | |||
Oura Ring 4 Ceramic Midnight Color: Ceramic Midnight
€320.36
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