top-pick 
Smart Rings
Oura Ring 4
The bottom line: Prices are stable. Factor in the $5.99/mo subscription — that's $359 in your first year. If price is a concern, check the RingConn Gen 2 Smart Ring instead.
Advanced health tracking smart ring with sleep analysis, heart rate monitoring, and blood oxygen sensing.
$299.00 -14% vs last week
All-time low: $299.00 at Amazon · Verify price at store Where to buy
Best Buy Best Price
$299.00 Check Price at Best Buy
Oura Official
$349.00 Check Price at Oura Official
Amazon
$399.00 Check Price at Amazon
Affiliate link — we may earn a commission.
Released: October 2024 Subscription Required: $5.99/mo iOS 15.0+ Android 8.0+
Pros & cons
What we like
- Exceptional sleep tracking accuracy and detailed insights
- Comfortable lightweight design for 24/7 wear
- 7-day battery life with fast charging
- Comprehensive recovery and readiness scores
- Improved sensors and accuracy over previous generations
What could be better
- Requires expensive monthly subscription for most features
- Limited smart features compared to smartwatches
- No display or notifications
- Sizing must be precise for accurate readings
Key features
Advanced sleep stage tracking and sleep score
Heart rate variability and resting heart rate monitoring
Activity tracking with automatic workout detection
Body temperature monitoring
Readiness score based on recovery metrics
Water resistant up to 100 meters
Who is this for?
Best for
Health-conscious individuals who want 24/7 passive tracking with a focus on sleep quality and recovery, without wearing a bulky watch.
Not ideal for
People who want real-time workout metrics on their wrist, or those who don't want any subscription fees for full features.
How it scores
Review scores
The Verge 7/10
CNET 8/10
Total cost of ownership
| Device Price | $299.00 |
| Subscription (Required) | $5.99/mo |
| Annual Plan | $59.99/yr |
| 1-Year Total Cost | $358.99 |
| 2-Year Total Cost | $418.98 |
| Free tier includes: Basic sleep tracking, Heart rate monitoring | |
Specifications
| Battery Life | Up to 7 days |
|---|---|
| Sensors | Heart rate, SpO2, temperature |
| Water Resistance | 100m |
| Connectivity | Bluetooth 5.3 |
| Weight | 4-6g depending on size |
Compatibility
iOS Supported (15.0+)
Android Supported (8.0+)
Companion App Oura App
Works exclusively through Oura mobile app
Featured in our guides
Compare Oura Ring 4 with
See how it stacks up against other smart rings — specs, price, and our verdict side by side.
