# Masimo MightySat Rx (Bluetooth LE) vs iHealth Air PO3M: specs and price compared

A sourced, side-by-side comparison of the Masimo MightySat Rx (Bluetooth LE) (Masimo) and iHealth Air PO3M (iHealth Labs) among pulse oximeters. iHealth Air PO3M is the cheaper of the two at $69.99.

## Side by side

| Spec | Masimo MightySat Rx (Bluetooth LE) | iHealth Air PO3M |
| --- | --- | --- |
| US price | $549 | $69.99 |
| Brand | Masimo | iHealth Labs |
| Spo2 range | 0-100% | 70-99% |
| Spo2 accuracy percent | 70-100% Arms: ±2% no motion, ±3% motion, ±2% low perfusion | ±2% (70-99%) |
| 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 | Bright LED numeric display |
| Perfusion index | Yes | — |
| Continuous monitoring | No | No |
| Bluetooth | Yes | Yes |
| Battery life hr | 15 | — |

## Key differences

- Spo2 range: Masimo MightySat Rx (Bluetooth LE) 0-100% vs iHealth Air PO3M 70-99%
- Spo2 accuracy percent: Masimo MightySat Rx (Bluetooth LE) 70-100% Arms: ±2% no motion, ±3% motion, ±2% low perfusion vs iHealth Air PO3M ±2% (70-99%)
- Pulse rate range bpm: Masimo MightySat Rx (Bluetooth LE) 25-240 bpm vs iHealth Air PO3M 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 iHealth Air PO3M Bright LED numeric display

## Sources

- Masimo MightySat Rx (Bluetooth LE): https://www.cardiacdirect.com/product/masimo-mightysat-rx-fingertip-pulse-oximeter/ (cardiacdirect.com, verified 2026-08-01)
- iHealth Air PO3M: https://support.ihealthlabs.com/hc/en-us/articles/8499453953677-FAQ-Technical-Specifications-for-the-iHealth-Air-Wireless-Pulse-Oximeter-PO3 (support.ihealthlabs.com, verified 2026-08-01)

Canonical: https://frontdeskreview.com/gear/pulse-oximeters/masimo-mightysat-rx-vs-ihealth-air-po3m/
Cite: Per The Front Desk Review, Masimo MightySat Rx (Bluetooth LE) ($549) vs iHealth Air PO3M ($69.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/pulse-oximeters/masimo-mightysat-rx-vs-ihealth-air-po3m/
License: CC BY 4.0.