R11
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R11 — On-ring display (no phone needed)
See stats on the ring with a built-in display + touch control. Note: no temperature tracking.
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Details & specs
Highlights
- On-ring display
- Touch control
- Perfect if you hate checking your phone
Quick specs
Battery5–7 days per charge
Temperature trackingNo
Touch controlYes
DisplayYes
NFCNo
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2025-11-17
No content.
2025-07-11
The ring was super cool, but the sizing was off. Even after following the instructions on the display photos, it was still two sizes too big!\n\nHowever, the seller responded so kindly when I messaged them!\n\nI got this for my husband, but I sent it back, and will have my husband order one himself.
Compare models
You’re viewing R11. Swipe on mobile.
| Features |
R05+
Best for: NFC + notifications
|
R11
Best for: display + touch control
|
R09+
Best for: temperature monitoring
|
Charging Case
Best for: charging on the go
|
||
|---|---|---|---|---|---|---|
| Body temperature | ||||||
| Touch control | ||||||
| Display screen | ||||||
| Health & fitness metrics | Included | Included | Included | Included | Included | |
| NFC | ||||||
| Includes charging case | Standalone |
Sizing Guide
Make sure you choose the right size (fast reference).
Measure an existing ring
Measure the inside diameter of a ring that fits the finger you’ll wear the smart ring on.
| Size | Inner Diameter (mm) | Circumference (mm) |
|---|---|---|
| 7 | - | - |
| 8 | 18.3 | 57.5 |
| 9 | 19.1 | 60.0 |
| 10 | 20.0 | 62.8 |
| 11 | 20.8 | 65.4 |
| 12 | 21.6 | 67.9 |
| 13 | 22.3 | 70.0 |
Quick tips
- If you’re between sizes, size up for comfort.
- For best sensor contact, a snug (not tight) fit works best.
- Your fingers can swell—check sizing later in the day.