lumthou R18 Enamel Craft Smart Ring: No subscription fee
For the active professional who wants discreet health insights without a bulky watch, the Lumthou Enamel Craft Smart Ring offers a stylish solution. This isn't just another fitness tracker; it's a seamless companion for your daily routine, from morning workouts to late-night rest. The feather-light design at 3-4g means you'll forget it's there, while the premium enamel finish in Rose Gold adds a touch of elegance that stands out in any setting.
Wear it to bed, and the sleep tracking automatically analyzes your stages, giving you actionable data to improve rest after a few nights of calibration. During the day, it monitors heart rate and SpO2, with real-time step counting to keep you motivated. Use the remote camera feature to snap photos hands-free, perfect for group shots or solo adventures. With IP68 waterproofing and a 5-7 day battery, it adapts to your life without interruptions, connecting via a multi-language app for easy use.
Features
- IP68 waterproof
- Sleep tracking
- Heart rate monitoring
- SpO2 measurement
- Remote camera control
- 8+ sports modes
- 5-7 days battery life
- Feather-light 0.11-0.14 oz weight
- Multi-language app support
- Care mode for sharing health data
- No subscription fee
General specs
- Brand: lumthou
- Model: R18
- Seller: Amazon
- ID: B0GH7NN14K
- Size: 10
- Brand: lumthou
- Weight: 0.007-0.009 lbs
- Quantity: 1
- Battery Life: 5-7 days
- Product Type: Smart Ring
- Comfort Wear: Feather-Light, Specially Polished Interior, 24/7 Wear
- Compatibility: iPhone, Android
- Target Gender: Women, Men
- Charging Method: Magnetic Charging Cable
- Finish Material: Premium Enamel Craft
- Subscription Fee: No
- Included Accessories: Magnetic Charging Cable, Guide
- Water Resistance Rating: IP68
- Additional Features Smart: Remote Camera Control, Care Mode, Multi-Language App Support (20+ languages)
- Features Fitness Tracking: Sleep Tracking, Heart Rate Monitoring, SpO2 Monitoring, Activity Tracking, Step Counting, 8+ Sports Modes
- Calibration Monitoring Sleep: 2-3 nights
- First listed by seller: 3/21/26
If you are interested in more details, you can find full information on the seller's page.
Buy on Amazon
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Shipping options
United States
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| Brand | lumthou | Kuinha | BIEMHA | TESKKR | Free Shark | |
| Model | R18 | VR11 | R191121 | |||
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| Price | $77.53 | $16.99 | $57.98 | $69.99 | $29.99 | $99.99 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | Mar 21, 2026 | Mar 21, 2026 | Mar 21, 2026 | Mar 21, 2026 | Mar 21, 2026 | Mar 21, 2026 |
| Size | 10 | 9 | 8 | 8# | 8 | |
| Battery Life | 5-7 days | 7 days | 3-5 days, 20 days with charging case | |||
| Product Type | Smart Ring | Smart Ring, Health Tracker, Fitness Tracker, Sleep Tracker, Activity Tracker | Smart Ring | |||
| Compatibility | iPhone, Android | Android 6.0 or above, iOS 11.0 or higher | iOS, Android | iOS, Android | iOS, Android | |
| Health Monitoring Features | Sleep quality tracking, Daily activity tracking, Step counting, Calorie tracking, Exercise performance tracking, Heart rate monitoring, Blood pressure monitoring | Heart rate, Blood oxygen, Stress, Menstrual cycle, Sleep monitoring | Sleep Monitoring, Step Counting, Heart Rate, Blood Oxygen | |||