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QALO SR-2 Smart Ring
$199.95
QALO SR-2 Smart Ring
$199.95
Meet the SR-2 Smart Ring (also known as the QRNT Slim Smart Ring), QALO’s second-generation health tracker. Slimmer profile, same durability, no subscription. Wherever you’re starting from, it helps you be a little better tomorrow.
- Accurate Tracking with Improved Sensor Technology
- Zero Subscription Costs
- 25% slimmer than SR-1
- Interchangeable covers
- Enhanced Data Privacy
- Charging case included
Effortlessly Track:
- Sleep
- Stress
- Movement
- Heart Rate Variability (HRV)
- Oxygen Saturation (SpO2)
- Skin temperature
- Complete Women’s Health
- & More
Choose your Color:
Brushed Gold
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How It Fits
SR-2
Snug Fit
True to size
Loose Fit
SR-2 fits more snug due to raised sensors on the inside. Consider swelling and knuckle width when choosing your fit.
→ Our recommendation: get your free Sizing Kit
QALO SR-2 Smart Ring
Unlock Your Best: The QALO Experience
Track heart rate, sleep, steps, and more—all day, every day—for effortless health insights.
Understand sleep, movement, and vitality in a single glance.
Track every stage: awake, light, deep, REM, and even naps. Get a daily Sleep Score, plus tips to boost energy and master recovery.
Accurate vitals from finger sensors: heart rate, HRV, stress, SpO2, and temperature trends. Stay ahead with smart alerts—more precise than wrist wearables!
Track steps, calories, and distance across 54 unique activity modes, including automatic activity detection. Up to 12.5% more accurate than popular alternatives!
Start Tracking Today
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QALO SR–2
QALOSR–2
O*** Ring
O*** Ring
Price
$199.99
Price
Starting at $249
Subscription Fee
Free
Subscription Fee
$69.99/year
Dimensions
2.85mm / 2.9mm Thickness
Dimensions
Width: 3.51mm Thickness: 7.90mm
Heart Rate Monitoring
Periodically
(throughout the day)
Heart Rate Monitoring
Periodically
(throughout the day)
HRV Monitoring
(Tailored)
HRV Monitoring
Skin Temperature Tracking
(Tailored)
Skin Temperature Tracking
SPO₂
(Tailored)
SPO₂
Sleep Tracking
Sleep Tracking
Sleep Metrics
Comprehensive Sleep Stages Tracking
with 6+ Contributing Metrics
Sleep Metrics
Comprehensive Sleep Stages
Nap Detection
Nap Detection
Battery life
Up to 5 days
Battery life
Up to 7 days
Full charging time
60 minutes
Full charging time
80 minutes
Water Resistance
Up to 100 meters (about ~330 feet)
Water Resistance
Up to 100 meters (about ~330 feet)
Performance based streaks
Performance based streaks
Company Country of Origin
United States
Company Country of Origin
Finland
Location of Your Health Data
United States
Location of Your Health Data
Global
Personalized Style
Engravable, protective covers
Personalized Style
QALO SR–2
QALOSR–2
O*** Ring
O*** Ring
Price
$199.99
Starting at $249
Subscription Fee
Free
$69.99/year
Dimensions
2.85mm / 2.9mm Thickness
Width: 3.51mm Thickness: 7.90mm
Heart Rate Monitoring
Periodically
(throughout the day)
Periodically
(throughout the day)
HRV Monitoring
(Tailored)
Skin Temperature Tracking
(Tailored)
SPO₂
(Tailored)
Sleep Tracking
Sleep Metrics
Comprehensive Sleep Stages Tracking
with 6+ Contributing Metrics
Comprehensive Sleep Stages
Nap Detection
Battery life
Up to 5 days
Up to 7 days
Full charging time
60 minutes
80 minutes
Water Resistance
Up to 100 meters (about ~330 feet)
Up to 100 meters (about ~330 feet)
Performance based streaks
Company Country of Origin
United States
Finland
Location of Your Health Data
United States
Global
Personalized Style
Engravable, protective covers
Smarter cycle health at every stage.
Understand all four phases on a deeper level with symptom logging, cycle predictions, and personalized insights–all without a subscription.
![[Image Alt Placeholder]](https://cdn.shopify.com/s/files/1/0201/1744/files/women_s_-_desktop.png?v=1757412928&width=2000)
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[ - Customer Reviews - ]
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Total reviews
4.78
Average rating
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