99%Heart Rate Accuracy
r2 compared to ECG21
Introducing Auro Ring 5
The world's smallest
smart ring puts 50+
health metrics at your
fingertips.
Auro Ring4
40%
Thinner. Lighter. Smaller.
Watch the film
Rebuilt from the inside out
Rebuilt for greater accuracy
Smart sensing technology finds clearer signals across a wider range of skin tones, body types and movement.
95%Sleep Staging Accuracy
Compared to clinical sleep lab2
90%Members Feel Healthier
Based on new member NPS survey
1 weekbattery life from a single charge.
Designed to disappear
Built to last.
Designed for comfort.
- Titanium inside and out
- Water resistant to 100m
- Smooth, uninterrupted interior
Everyday health sensing
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![A man resting in bed wearing an Auro Ring 5 in Gold finish]()
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![Auro app view of sleep score data]()
Sleep Score
The answer to “how did you sleep last night?” Your score brings together total sleep, heart rate variability, nighttime movement, sleep regularity, and more.
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![A chart showing sleep stages]()
Sleep Stages
Wake up to an in-depth analysis of your deep sleep, REM sleep, and light sleep from the night prior.
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![Auro app view of blood oxygen data]()
Blood Oxygen Sensing
By detecting blood oxygen levels at night, Auro can help surface possible breathing disturbances.
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![Auro app view of bedtime guidance]()
Bedtime Guidance
Auro reminds you when to begin winding down so you can build a more consistent sleep routine.
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![Auro app view of nighttime breathing results]()
Nighttime Breathing
See whether something may be affecting your breathing patterns during sleep and how frequently disturbances occur.
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![A person relaxing in grass while wearing an Auro Ring 5]()
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![Auro app view of automatic activity detection]()
Automatic Activity Detection
From cycling to basketball to housework, Auro recognizes everyday movement so more of what you do counts.
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![Auro app view of activity score data]()
Activity Score
Review activity levels, consistency, and recovery time to understand your balance between movement and rest.
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![Auro app view of personalized activity goals]()
Personalized Activity Goals
Auro creates a daily activity goal informed by your recovery and the health priorities you choose.
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![A hand wearing an Auro Ring 5 touching the surface of a pond]()
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![Auro app view of readiness score data]()
Readiness Score
Your Readiness Score uses temperature trends, heart rate, sleep, and more to show how prepared you are for the day.
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![Auro app view of a symptom radar card]()
Symptom Radar
Auro scans for signs of strain in your biometrics and can surface early changes worth paying attention to.
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![A person resting with their hands behind their head while wearing an Auro Ring 5]()
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![Auro app view of daytime stress data]()
Daytime Stress
Understand what challenges you and what helps you recover by seeing how movement, activities, and tags relate to stress.
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![Auro app view of resilience data]()
Resilience
Monitor how well your body recovers from day-to-day physiological stress and how resilience changes over time.
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![Two people embracing while wearing Auro Ring 5]()
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![Auro app view of heart rate monitoring]()
24/7 Heart Rate Monitoring
See how heart rate changes day and night and how your body responds to habits, meals, stress, and environment.
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![Auro app view of cardiovascular age]()
Cardiovascular Age
Understand how your cardiovascular system is aging relative to your chronological age and what that trend may mean.
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![Auro app view of cardio capacity]()
Cardio Capacity
Get an estimate of VO2 Max—how efficiently your body delivers and uses oxygen during intense effort.
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![Auro app view of heart rate variability]()
Heart Rate Variability
Follow HRV trends to better understand when your body may be stressed or in need of recovery.
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![Auro app view of overnight blood pressure patterns]()
Blood Pressure Signals
See how nighttime blood pressure patterns evolve over time through long-term trend views.
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![A woman wearing an Auro Ring 5 in Silver finish]()
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![Auro app view of cycle insights]()
Cycle Insights
Temperature trends unlock more context about your menstrual cycle and how your needs may change throughout the month.
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![Auro app view of period prediction]()
Period Prediction
Temperature changes add information that can help you track cycles and anticipate when your period may begin.
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![Mobile phone displaying the Natural Cycles app]()
Natural Cycles Integration
Connect temperature data with Natural Cycles through an integration designed to keep daily tracking simple.
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![Mobile phone displaying a partner health app]()
Partner Integrations
Choose to connect Auro data with the health and fertility apps you already trust.
Form meets function
Built for accuracy, designed for your everyday
Comfortably wear Auro Ring all day and night to collect deeply personal health metrics and insights. Your finger provides a precise vantage point for tracking 50+ health metrics† that can influence how you feel.
How It Works† Feature availability may vary by app version and region.
Starting your day
Taking a walk
Under the weather
Winding down
Hosting a party
Balance you can wear
Advanced technology for your daily balance
7-day battery • One quiet ring
Begin your balance
30-night trial • Full refund
- 5-day battery
- Waterproof to 100 m
- Titanium, 6 finishes
Ships in every size from 5 to 13.
Shop Auro 5What's Included
Everything you need to begin.
- 01Auro Ring 5
- 02Size-specific standard charger
- 03USB-C cable
Technical specifications
Small by design.
Serious underneath.
Sensors−
Red and infrared LEDs, green LEDs, temperature sensors and accelerometer.
Compatibility+
iOS and Android support with metric or imperial measurements.
Dimensions & weight+
6.09 mm wide, 2.28 mm thick and starting at 2 grams.
Battery & charging+
6–9 days of battery life; up to 80 minutes for a full charge.
Materials & durability+
High-performance titanium construction and water resistance to 100m.
Connectivity+
Bluetooth Low Energy, automatic firmware updates and airplane mode.
