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Oura Ring 5
World’s smallest smart ring with 50+ health metrics at your fingertips
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⚡⚡ Specification Summary: Oura Ring 5
⚡ Specification Summary: Oura Ring 5
Oura Ring 5 offers a biometric tracking suite with a $5.99/mo membership. Published specifications list up to 7-day battery life, High-performance Titanium, and 3g weight.
📋 Key Takeaways:
- ✓Rated Battery Life: Up to 7 days per charge cycle (80-minute full recharge).
- ✓Monthly Subscription: $5.99/month ($614.64 3-year total).
- ✓Durability & Sizing: 100m/328 ft, IP68 rated for water and dust water resistance with Available in multiple sizes sizing options.
World’s smallest smart ring with 50+ health metrics at your fingertips
Order the manufacturer sizing kit prior to ring delivery to verify finger fit.
Advantages & Pros
- ✓Compact and lightweight design
- ✓High accuracy in heart rate and sleep metrics
- ✓Durable and waterproof
- ✓Wide range of tracking features
Limitations & Cons
- ✕No charging case included
- ✕Dependent on app for full functionality
Independent Video Reviews
Oura Ring 5 Review: I Didn't Expect This…
By Tom's Guide
Covers the slim 2.5mm profile, scratch resistance, and women's health tracking updates.
Form Factor & Resilience
| Materials | High-performance Titanium |
| Width / Thickness | 6.09mm wide / 2.28mm thick |
| Weight | 3g |
| Water Resistance | 100m/328 ft, IP68 rated for water and dust |
| Size Range | Available in multiple sizes |
| Sizing Kit Offered | ✓ YesOfficial Sizing Protocol → |
Power Architecture
| Battery Life | Up to 7 days |
| Charging Time | 80 minutes |
| Charger Type | Standard charger via USB-C |
| Charging Case Included | ✕ No |
Sensor Array & Biometrics
| Built-in Sensors | Red and infrared LEDs (blood oxygen levels), Green and infrared LEDs (heart rate and heart rate variability), Digital sensor (temperature trends), Accelerometer (tracks movement and activity) |
| LED Optical Colors | Red, Infrared, Green |
| Stress Tracking | ✓ Yes |
| Cycle Prediction | ✓ Yes |
| Sleep Metrics | Total Sleep, Heart Rate Variability (HRV), Nighttime Movement, Sleep Regularity |
Software & Ecosystem
| Companion App | Oura App |
| Supported OS | iOS & Android |
| Apple Health Link | ✓ Yes |
| Google Connect Link | ✓ Yes |
| Offline Storage | Up to 10 days |
| Bluetooth version | Bluetooth Low Energy |
Virtual Sizing Assistant
Convert your finger circumference to a standard US ring size. Smart ring brands may size differently from jewelers, so confirm with the manufacturer's sizing guide or sizing kit before buying.
Your Standard US Ring Size
Smart ring sizes vary by brand and model. Use this as a starting point and confirm your size with the manufacturer's sizing guide or sizing kit before ordering.
Sizing Decision Matrix (24-Hour Sizing Kit Rule)
Learn how to bypass sizing mismatches. Under the 24-Hour Sizing Kit Rule, users must wear a plastic sizing ring for a full day to capture natural biometric swelling cycles.
Do you own or have access to an official vendor sizing kit?
Frequently Asked Questions: Oura Ring 5
Does the Oura Ring 5 require a monthly subscription?
Yes. The Oura Ring 5 has an MSRP of $399 and requires a $5.99/month membership, resulting in a 3-year total cost of $614.64.
How long does the Oura Ring 5 battery last?
Manufacturer specifications rate the Oura Ring 5 for up to 7 days per charge, with a full recharge time of approximately 80 minutes.
What are the Oura Ring 5 dimensions and water resistance?
The Oura Ring 5 weighs 3g, measures 6.09mm wide by 2.28mm thick, is constructed from High-performance Titanium, and is rated for 100m/328 ft, IP68 rated for water and dust.
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