Question 1

Which is better, Masimo MightySat Rx or Zacurate 500BL Pro Series?

Accepted Answer

Based on our testing, the Masimo MightySat Rx scores higher overall at 9.2/10. The Masimo MightySat Rx scored 9.2/10 and the Zacurate 500BL Pro Series scored 8.7/10 in our Best Fingertip Oximeters 2026 evaluation.

Question 2

Is the Masimo MightySat Rx worth it over the Zacurate 500BL Pro Series?

Accepted Answer

The Masimo MightySat Rx scores 9.2/10 while the Zacurate 500BL Pro Series scores 8.7/10. The Masimo MightySat Rx is our "Best Overall" pick in the Best Fingertip Oximeters 2026 category.

Masimo MightySat Rx vs Zacurate 500BL Pro Series: Which to Buy?