ElectroCN R02 Smart Ring: Sleep tracking
For the active professional who wants to track health without a bulky wrist device, the R02 Smart Ring offers a discreet way to monitor your wellness. This isn't just another fitness tracker—it's a seamless part of your daily routine, providing peace of mind with continuous health insights.
The IP68 waterproof rating means you can wear it in the shower or during intense workouts without worry. The heart rate sensor picks up subtle changes during sleep, helping you understand your rest patterns. With 21 sports modes, it automatically logs your activities, so you stay focused on your goals. The magnetic charging provides a full week of battery life from just one hour of charging.
Compatible with Apple Health and Android systems, it syncs effortlessly to your phone. The hypoallergenic inner ring ensures comfort all day, and the free sizing kit helps you find the perfect fit. Use it to track steps, calories, and stress levels, making health management simple and intuitive.
Features
- Heart rate monitoring
- Blood oxygen monitoring
- IP68 waterproof rating
- 21 sports modes
- Stress monitoring
- Step counting
- Calorie counting
- Distance tracking
- Water resistance up to 4.9 feet for 30 minutes
- Battery life up to 7 days
- Magnetic charging
- Compatible with Android and iOS
- Integration with Apple Health
- Free sizing kit available
- Hypoallergenic inner ring
- Sleep tracking
General specs
- Brand: ElectroCN
- Model: R02
- Seller: Joom
- ID: 68bfe3344a91480116686413
- Size: 6, 7, 8, 9, 10, 11, 12, 13, 14
- Material: Titanium Alloy
- Battery Life: 7–10 d
- Connectivity: Bluetooth
- Display Type: OLED
- Charging Method: Magnetic
- OS Compatibility: Android, iOS
- Water Resistance: IP68
- Bluetooth Version: 5.3
- First listed by seller: 12/6/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
ElectroCN R02 Black Sleep tracking
|
Milavan TK20 Rose Gold
|
SHGMEET B0FFSYYDXZ Silver
|
Domhong R03 Silver No app subscription required
|
Domhong R03 Black Heart rate and blood oxygen monitoring
|
Smart Wellness Ring Black
|
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| Brand | ElectroCN | Milavan | SHGMEET | Domhong | Domhong | Heraphus |
| Model | R02 | TK20 | B0FFSYYDXZ | R03 | R03 | |
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| Rating |
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| Price | $39.60 | $56.04 | $39.98 | $29.99 | $29.99 | $59.98 |
| Seller | Joom | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | January 30, 2026 | January 21, 2026 | January 21, 2026 | December 6, 2025 | December 6, 2025 | December 6, 2025 |
| Size | 6, 7, 8, 9, 10, 11, 12, 13, 14 | 8 | 9 | 10 | 9 | 9 |
| Battery Life | 7–10 d | 3–5 d | 3–5 d | 5–7 d | 5–7 d | 3–5 d |
| OS Compatibility | Android, iOS | Android, iOS | Android 5.0+, iOS 10+ | Android 5.1+, iOS 8+ | Android 5.0+, iOS 8+ | |
| Water Resistance | IP68 | 5ATM | 5ATM | 5ATM | IP68 | |
| Bluetooth Version | 5.3 | 5.0 | 5.1 | |||
| Weight | 0.240625 | 3.5 | 109.09 | |||
