We recommend using a soft measuring tape to measure the circumference of your finger, then compare it with our size chart to find the best fit. The ring should sit firmly but not tight for accurate tracking.
Koepovk Negative Ion Air Purifier
Regular price
$39.99
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Estimate delivery times: 3-7 days International.
Use code 'KK001' for discount 10% on your first order.
Free shipping and returns
What's in the box
Koepovk Smart Ring
Standard Ring Charger
Magnetic Charging Cable
Launch the Guardians Series
A powerful, all-in-one Ring AIR smart ring — blending health tracking, smart control, and sleek design for life on the move.
Advanced Health Tracking Features
Discover the technology that powers your daily wellness insights
Advanced Sleep Analysis
24/7 Activity Tracking
Blood oxygen monitoring
HRV Stress Tracking
Tech Spec
In-depth analysis based on actual data and user experience
Qring
Versatile Health Tracker
Weight
3 - 5 g(varies by size)
Feel
One US penny
Form
"Ring with display"
Heart Rate
24/7 monitoring
Battery
5-7 days
Smart Health
Innovative fitness companion
Weight
3 - 5 g(varies by size)
Feel
The weight of a credit card
Form
"no display"
Heart Rate
24/7 monitoring
Battery
3 - 6 days
KUMIWear
New combination of Watch & Smart Ring
Weight
17 g
Feel
Like a house key
Form
"Ring with display"
Heart Rate
24/7 monitoring
Battery
5 - 7 days
| Feature | Qring | Smart Health | KUMIWear |
|---|---|---|---|
| Design & Form Factor | |||
| Weight | 3-5 grams (varies by model) |
3-5 grams (varies by model) |
17 grams |
| Touch Control |
Limited (varies by model) |
Not available | Not available |
| Remote Control Photography | Support | Support | Support |
| Water Resistance | 5ATM | IP68 | IP68 |
| Health & Activity Tracking | |||
| Sleep Tracking & Analysis |
Periodically (night sleep time) |
Periodically (night sleep time) |
Periodically (night sleep time) |
| Heart Rate Monitoring |
Periodically (throughout the day) |
Periodically (throughout the day) |
Periodically (throughout the day) |
| HRV Monitoring | 24/7 Support |
Limited (varies by model) |
Not available |
| Stress Monitoring | Support | Not available | Not available |
| Movement & Workout | |||
| Step Counting | Support | Support | Support |
| Distance and Calories | Support | Support | Support |
| Multi-sports Mode | Support | Support | Support |
| Battery & Durability | |||
| Battery Life | 5-7 days | 3-6 days | 5-7 days |
| Full Charging Time | 1.5 hours | 1-2 hours | 1-2 hours |
| Charging Case/Cable | Magnetic Charging Case | Magnetic Charging Case | Magnetic Charging Case |
Comparison Notes
indicates full feature support, indicates limited or no support, indicates periodic monitoring
All data based on official specifications and user testing results. Continuous monitoring capabilities may vary based on software version, device settings, and environment.