Some Validation Tests On the M5

Used a Fluke simulator first to establish baselines across SpO₂ ranges. Then moved to actual finger testing, because a simulator won’t tell you how the sensor behaves with real perfusion and motion. The M5 tracks SpO₂, pulse rate, heart rate, and waveform on a single screen.

The gaps between our readings and the reference devices were narrow. When you’re measuring yourself against the two names the entire industry benchmarks against, a tight spread is exactly what you want to see.