Masimo
Masimo MightySat Rx (Bluetooth LE)
$549
Best Pulse Oximeters · head-to-head
Masimo MightySat Rx (Bluetooth LE) vs Wellue O2Ring
A sourced, side-by-side comparison. Wellue O2Ring is cheaper at $152.9. Every spec and price links to its source.
Wellue (Viatom)
Wellue O2Ring
$152.9Cheaper
Which is better: the Masimo MightySat Rx (Bluetooth LE) or Wellue O2Ring?
On the specs we track, they're closely matched. The Wellue O2Ring is the cheaper at $152.9.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Masimo MightySat Rx (Bluetooth LE) | Wellue O2Ring |
|---|---|---|
| US price | $549 | $152.9 |
| Brand | Masimo | Wellue (Viatom) |
| Released | — | — |
| Spo2 range | 0-100% | 70-100% |
| Spo2 accuracy percent | 70-100% Arms: ±2% no motion, ±3% motion, ±2% low perfusion | ±2% (80-100%), ±3% (70-79%) |
| Pulse rate range bpm | 25-240 bpm | 30-250 bpm |
| Display type | Rotating, adjustable 3.3 cm color display with pleth waveform and Signal IQ indicator | On-ring digital display with app-adjustable brightness |
| Perfusion index | Yes | — |
| Continuous monitoring | No | Yes |
| Bluetooth | Yes | Yes |
| Battery life hr | 15 | 16 |
Sources — Masimo MightySat Rx (Bluetooth LE): cardiacdirect.com (verified 2026-08-01). Wellue O2Ring: getwellue.com (verified 2026-08-01).
What's the difference between the Masimo MightySat Rx (Bluetooth LE) and Wellue O2Ring?
Where the two actually differ on the specs we track (6 of 8). Matching specs are omitted.
- Spo2 range: Masimo MightySat Rx (Bluetooth LE) 0-100% vs Wellue O2Ring 70-100%
- Spo2 accuracy percent: Masimo MightySat Rx (Bluetooth LE) 70-100% Arms: ±2% no motion, ±3% motion, ±2% low perfusion vs Wellue O2Ring ±2% (80-100%), ±3% (70-79%)
- Pulse rate range bpm: Masimo MightySat Rx (Bluetooth LE) 25-240 bpm vs Wellue O2Ring 30-250 bpm
- Display type: Masimo MightySat Rx (Bluetooth LE) Rotating, adjustable 3.3 cm color display with pleth waveform and Signal IQ indicator vs Wellue O2Ring On-ring digital display with app-adjustable brightness
- Continuous monitoring: Masimo MightySat Rx (Bluetooth LE) false vs Wellue O2Ring true
- Battery life hr: Masimo MightySat Rx (Bluetooth LE) 15 vs Wellue O2Ring 16