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metaXring Arc
Smart health ring · AI inside
Pick color and size to see availability.
Price includes free express shipping, duties and import taxes. Nothing to pay on delivery.
Details
metaXring Arc listens to your heart rate, HRV, blood oxygen, skin temperature and sleep, all day and all night. It measures every reading against your own 30-day baseline, turns them into one number — Body Power — and the app tells you in plain words what changed and what to do next. No screen, nothing to check: just a ring you forget you're wearing.
Size guide
Measure the inside of a ring that fits you, or wrap a strip of paper around your finger and measure its length.
| US size | Inner diameter (mm) | Circumference (mm) |
|---|---|---|
| 6 | 16.5 | 51.8 |
| 7 | 17.4 | 54.7 |
| 8 | 18.2 | 57.2 |
| 9 | 19.0 | 59.7 |
| 10 | 19.9 | 62.5 |
| 11 | 20.7 | 65.0 |
| 12 | 21.5 | 67.5 |
| 13 | 22.3 | 70.1 |
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