Wellue (Viatom)
Wellue O2Ring
$152.9
Best Pulse Oximeters · head-to-head
Wellue O2Ring vs iHealth Air PO3M
A sourced, side-by-side comparison. iHealth Air PO3M is cheaper at $69.99. Every spec and price links to its source.
iHealth Labs
iHealth Air PO3M
$69.99Cheaper
Which is better: the Wellue O2Ring or iHealth Air PO3M?
On the specs we track, they're closely matched. The iHealth Air PO3M is the cheaper at $69.99.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Wellue O2Ring | iHealth Air PO3M |
|---|---|---|
| US price | $152.9 | $69.99 |
| Brand | Wellue (Viatom) | iHealth Labs |
| Released | — | — |
| Spo2 range | 70-100% | 70-99% |
| Spo2 accuracy percent | ±2% (80-100%), ±3% (70-79%) | ±2% (70-99%) |
| Pulse rate range bpm | 30-250 bpm | 30-250 bpm |
| Display type | On-ring digital display with app-adjustable brightness | Bright LED numeric display |
| Perfusion index | — | — |
| Continuous monitoring | Yes | No |
| Bluetooth | Yes | Yes |
| Battery life hr | 16 | — |
Sources — Wellue O2Ring: getwellue.com (verified 2026-08-01). iHealth Air PO3M: support.ihealthlabs.com (verified 2026-08-01).
What's the difference between the Wellue O2Ring and iHealth Air PO3M?
Where the two actually differ on the specs we track (4 of 8). Matching specs are omitted.
- Spo2 range: Wellue O2Ring 70-100% vs iHealth Air PO3M 70-99%
- Spo2 accuracy percent: Wellue O2Ring ±2% (80-100%), ±3% (70-79%) vs iHealth Air PO3M ±2% (70-99%)
- Display type: Wellue O2Ring On-ring digital display with app-adjustable brightness vs iHealth Air PO3M Bright LED numeric display
- Continuous monitoring: Wellue O2Ring true vs iHealth Air PO3M false