Unbranded · current · checked 2026-10-06
R11C Smart Ring
The display and charging case are useful on paper, but the water-rating conflict and lack of independent accuracy testing make this a gadget, not a trusted health device.
Budget shoppers wanting a simple display ring who can tolerate app, seller and support uncertainty.
Decision summary
Strengths
- On-ring display in reviewed R11C documentation
- Charging case included in the manual
- Five-to-seven-day battery claim
Limitations
- Listing and manual disagree on water resistance
- No independent accuracy validation
- Unbranded hardware makes variant, app, warranty and support continuity uncertain
Cost
Ownership cost
Hardware plus the currently required plan, using the dated reference price. Tax, shipping, optional services and replacements are excluded.
No paid plan is disclosed in the reviewed listing/manual material; current QRing app terms remain unverified.
Fit and hardware
What you wear
| Sizing | No sizing kit was verified. The manual lists sizes 7–13; use the exact listing chart and confirm return terms. |
|---|---|
| Sizes | 7, 8, 9, 10, 11, 12, 13 |
| Weight | 3.2 g claimed for size 7; other sizes unverified |
| Finishes | Silver, Rose Gold, Gun Color |
| Sensors | HX3918 optical heart-rate/SpO2 sensor (manual claim); ST LIS2DOC motion sensor (manual claim) |
| Outputs | Heart rate and SpO2; Sleep; Stress and HRV; Steps, distance and calories; Multi-sport records |
| GPS and routes | The reviewed R11C specification states no GPS. Any route recording would therefore depend on an unverified phone/app workflow. Checked 2026-10-06. |
| Charging | Manual claims a magnetic 15–18 mAh ring battery, about 1.5-hour charging and a 200 mAh USB-C case with roughly 11 refills. |
| Water | The listing title claims IP68 / 5 ATM, while the reviewed R11C manual states 1 ATM. The conflict is unresolved; do not swim with it based on these claims. |
| Strength training | Useful for passive trends, not live workout guidance. Remove metal rings for loaded grip work to reduce pressure, scratching and injury risk. |
Compatibility and data
App and account
Compatibility
The reviewed R11C manual claims Android 5.1+ and iOS 8.0+; compatibility for item 3256809470652414 is not independently verified.
Platforms: QRing app
Data handling
The QRing app privacy and data-retention terms for this listing are not verified.
Account requirements are not verified. Health-platform integrations and data export are not verified.
Evidence
Sources and limits
Seller claims and a reproduced R11C manual only. The exact item page could not be independently read; health outputs are wellness estimates and not diagnosis.
- R11C AliExpress listing ↗marketplace · checked 2026-10-06
Exact item identity and advertised heart-rate, blood-oxygen, sleep, multi-sport and IP68 / 5 ATM claims; live price, stock and shipping remain checkout data.
- R11C instruction manual ↗manual · checked 2026-10-06
R11C display, sensors, sizes, battery, charging case, QRing app, no-GPS statement and conflicting 1 ATM rating.
Not medical advice. Consumer wellness signals cannot diagnose or exclude a condition. Discuss concerning symptoms or readings with a qualified clinician.