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Ring vs Tracker
Compare screen-free rings with wrist fitness trackers for sleep comfort, workout feedback, sizing, battery life, and when a smartwatch is the fallback.
Oura JZ90-54217-10 Silver, Size 10 Ring 4 Silver Size 10
Available Options
Current
Silver, Size 10
Amazon
€291.86
Available to order
Price history by variant
Volatility: MediumFeatures
- Tracks 50+ health metrics
- Up to 8 days battery life
- Smart Sensing adapts to you
- First month membership included
- HSA/FSA eligible
Product details
General specs
- Brand: Oura
- Model: JZ90-54216-08
- Brand: Oura
- Model: Oura Ring 4
- Sizing: Requires Oura Ring 4 Sizing Kit
- Display: No screen
- Sensors: Smart Sensing technology
- Material: Titanium
- Vibration: None
- Advisor Ai: Yes
- Battery Life: Up to 8 days
- Release Date: 2024-10-15
- Compatibility: Android, iOS
- Health Metrics: 50+ health metrics
- Number of Items: 1
- Water Resistance: Water resistant
If you are interested in more details, you can find full information on the seller's page.
Amazon live offers
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Top live offer is the offer currently shown first for this Amazon listing. It may differ from the lowest available price.
FBA means the order is fulfilled by Amazon, even when the seller is a third-party merchant.
Shippable means the offer is listed as available for delivery on Amazon.
New, Used and Refurbished describe the item condition shown for that Amazon offer.
Top live offer
€291.86
Free shipping
New
Third-party seller
Shippable
New from
€291.86
Only from New + Shippable live offers
Used from
€197.16
Only from Used + Shippable live offers
New offers
Third-party seller
· Shippable
€291.86
Third-party seller
· FBA · Shippable
€300.48
Sold by Amazon
· FBA · Shippable
€300.48
Used offers
Used - Acceptable
· Third-party seller
· Shippable
€197.16
Used - Like New
· Third-party seller
· Shippable
€241.06
Used - Like New
· Third-party seller
· Shippable
€257.43
Used - Like New
· Third-party seller
· Shippable
€266.89
Offers updated: 9/2/26
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Price History for seller Amazon
Shipping options
Delivery to 
United States
United States
Available
Designed for anyone wanting deeper health insights without another screen. This silver Oura Ring 4 in size 10 tracks over 50 metrics, including sleep, activity, stress, and heart health. You wear it 24/7, barely noticing its presence. Smart Sensing technology adapts to your unique finger, delivering accurate data all day and night.
The ring works hardest while you sleep. It captures your sleep stages, heart rate variability, and nightly skin temperature. Morning reports reveal how your night affects your day. That afternoon energy dip? You trace it back to a restless night. With consistent use, you learn to tweak your bedtime, activity, and relaxation for better outcomes.
Battery life lasts up to eight days. Charge it during your shower and wear it uninterrupted. The ring never vibrates or lights up. It collects and synthesizes without interruption. Use pre-tax HSA or FSA funds to invest in your wellness. Order the free sizing kit first. Standard ring sizes do not apply here. Your purchase includes a one-month Oura membership trial, then $5.99 monthly.
Oura JZ90-54217-10 Silver Tracks 50+ health metrics
€291.86
Affiliate link. As an Amazon Associate I earn from qualifying purchases.
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