Masimo
Masimo MightySat Rx (Bluetooth LE)
$549
Best Pulse Oximeters · head-to-head
Masimo MightySat Rx (Bluetooth LE) vs Zacurate Pro Series 500DL
A sourced, side-by-side comparison. Zacurate Pro Series 500DL is cheaper at $19.99. Every spec and price links to its source.
Zacurate
Zacurate Pro Series 500DL
$19.99Cheaper
Which is better: the Masimo MightySat Rx (Bluetooth LE) or Zacurate Pro Series 500DL?
On the specs we track, they're closely matched. The Zacurate Pro Series 500DL is the cheaper at $19.99.
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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) | Zacurate Pro Series 500DL |
|---|---|---|
| US price | $549 | $19.99 |
| Brand | Masimo | Zacurate |
| Released | — | — |
| Spo2 range | 0-100% | 0-100% |
| Spo2 accuracy percent | 70-100% Arms: ±2% no motion, ±3% motion, ±2% low perfusion | ±2% (70-99%) |
| Pulse rate range bpm | 25-240 bpm | 25-250 bpm |
| Display type | Rotating, adjustable 3.3 cm color display with pleth waveform and Signal IQ indicator | LED numeric display |
| Perfusion index | Yes | No |
| Continuous monitoring | No | No |
| Bluetooth | Yes | No |
| Battery life hr | 15 | 35 |
Sources — Masimo MightySat Rx (Bluetooth LE): cardiacdirect.com (verified 2026-08-01). Zacurate Pro Series 500DL: zacurate.com (verified 2026-08-01).
What's the difference between the Masimo MightySat Rx (Bluetooth LE) and Zacurate Pro Series 500DL?
Where the two actually differ on the specs we track (6 of 8). Matching specs are omitted.
- Spo2 accuracy percent: Masimo MightySat Rx (Bluetooth LE) 70-100% Arms: ±2% no motion, ±3% motion, ±2% low perfusion vs Zacurate Pro Series 500DL ±2% (70-99%)
- Pulse rate range bpm: Masimo MightySat Rx (Bluetooth LE) 25-240 bpm vs Zacurate Pro Series 500DL 25-250 bpm
- Display type: Masimo MightySat Rx (Bluetooth LE) Rotating, adjustable 3.3 cm color display with pleth waveform and Signal IQ indicator vs Zacurate Pro Series 500DL LED numeric display
- Perfusion index: Masimo MightySat Rx (Bluetooth LE) true vs Zacurate Pro Series 500DL false
- Bluetooth: Masimo MightySat Rx (Bluetooth LE) true vs Zacurate Pro Series 500DL false
- Battery life hr: Masimo MightySat Rx (Bluetooth LE) 15 vs Zacurate Pro Series 500DL 35