Price range
€80
– €98
lumthou R18 Smart Ring
A smart ring designed for discreet health and fitness tracking, featuring premium enamel craftsmanship. It offers comprehensive monitoring including sleep stages, heart rate, and SpO2 levels, with 8+ sports modes for activity tracking. The feather-light design ensures comfort for 24/7 wear, while IP68 waterproofing and a 5-7 day battery life support an active lifestyle. Additional smart features include remote camera control and multi-language app support for easy data access and sharing, with no subscription fees required.
- 2 offers
- No subscription fee
Price spread
~22%
Across listed offers
Customer rating
22 ratings
Available offers (2)
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Enamel Rose Gold, Size 10
Retailer
Available to order
- No subscription fee
- IP68 waterproof
- Sleep tracking
Enamel Rose Gold, Size 10
Retailer
Available to order
- No subscription fee
- IP68 waterproof
- Sleep tracking
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| Brand | lumthou | Kuinha | S SECRETTOP | S SECRETTOP | S SECRETTOP | Aoyool |
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| Price | €98.09 | €15.15 | €178.36 | €124.85 | €214.04 | €35.67 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | May 14, 2026 | Mar 21, 2026 | May 20, 2026 | May 20, 2026 | May 7, 2026 | Jun 24, 2026 |
| Size | 10 | 9 | 7 | 8 | ||
| Battery Life | 5-7 days | 7 days | 3-5 days typical use, 7-10 days standby | 3-5 days typical use, 7-10 days standby | 3-5 days typical use, 7-10 days standby | 3-5 days |
| Compatibility | iPhone, Android | Android 6.0 or above, iOS 11.0 or higher | Android 5.1+, iOS 8.0+ | iOS, Android | Android 5.0+, iOS 9.0+ | |
| Charging Method | Magnetic Charging Cable | USB Cable, Portable Charging Case | USB Cable, Portable Charging Case | USB Cable, Portable Charging Case | ||
| Water Resistance Rating | IP68 | IP68 | IP68 | |||
| Water Resistance | IP68 | IP68 | IP68 | |||
| Material | Stainless Steel Alloy Exterior, Epoxy Resin Inner Ring | Stainless Steel Alloy (exterior), Epoxy Resin (inner ring) | Stainless Steel Alloy Exterior, Epoxy Resin Inner Ring | |||
| App Features | Detailed Health Reports, Sleep Stage Analysis, Workout Insight, Family Wellness Sharing, Route Tracking | Detailed Reports, Sleep Stages View, Route Tracking, Family Wellness Sharing, Hands-Free Photography | Detailed Reports, Family Wellness Sharing, Route Viewing, Hands-Free Photography | |||
| Connectivity | Android 5.1+, iOS 8.0+ | Bluetooth (via Android 5.1+ or iOS 8.0+) | Bluetooth | |||
| Sports Modes | Outdoor Running, Indoor Running, Outdoor Cycling, Indoor Cycling, Walking, Basketball, Football, Badminton, Swimming, Rope Skipping, Mountain Climbing, Yoga | Outdoor Running, Indoor Running, Outdoor Cycling, Indoor Cycling, Walking, Basketball, Football, Badminton, Swimming, Rope Skipping, Mountain Climbing, Yoga | Outdoor Running, Indoor Running, Outdoor Cycling, Indoor Cycling, Walking, Basketball, Football, Badminton, Swimming, Rope Skipping, Mountain Climbing, Yoga | Running, Cycling, Skipping Rope, Walking, Hiking, Yoga, Dancing, Golf | ||
| Sleep Tracking Metrics | Total Sleep Time, Deep Sleep, Light Sleep, REM Sleep, Awake Periods | Total Sleep Time, Deep Sleep, Light Sleep, REM Sleep, Awake Periods | Total Sleep Time, Deep Sleep, Light Sleep, REM Sleep, Awake Periods | Deep Sleep Duration, Light Sleep Duration, Eye Movement, Wakefulness | ||
| Health Monitoring Features | Heart Rate, Blood Oxygen (SpO2), Sleep Monitoring, Steps, Distance, Calories, Blood Pressure | Heart Rate, Blood Oxygen (SpO2), Sleep Monitoring, Calories, Steps, Distance, Blood Pressure | Heart Rate, Blood Oxygen (SpO2), Sleep Tracking, Blood Pressure | Heart Rate, Blood Oxygen (SPO₂), Sleep Tracking, Activity Monitoring | ||
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