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metaXring Arc
Smart health ring · AI inside
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价格已包含免费快递、关税和进口税，签收时无需另付任何费用。
详细信息
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.
尺码指南
测量一枚你戴着合适的戒指的内径，或用一条纸条绕手指一圈，再测量纸条的长度。
| 美国尺码 | 内径（毫米） | 周长（毫米） |
|---|---|---|
| 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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