Zacurate 500E-B vs Masimo MightySat - Clinical Comparison
Compare Zacurate 500E-B and Masimo MightySat side-by-side with clinical performance scores, FDA status, pricing, and expert recommendations
Performance Metrics
Performance Metrics
Accuracy
Reading alignment with standards.
Accuracy
Reading alignment with standards.
Ease of Use
Operational simplicity.
Ease of Use
Operational simplicity.
Hardware Quality
Durability and materials.
Hardware Quality
Durability and materials.
Value for Money
Performance vs cost.
Value for Money
Performance vs cost.
Clinical Efficacy
Clinical Efficacy
Oxygen Saturation Accuracy
Deviation from ABG.
Oxygen Saturation Accuracy
Deviation from ABG.
Heart Rate Accuracy
Difference from ECG.
Heart Rate Accuracy
Difference from ECG.
Low Perfusion Performance
Accuracy at low PI.
Low Perfusion Performance
Accuracy at low PI.
Specifications
| Specification | Zacurate 500E-B | Masimo MightySat |
|---|---|---|
| Price | $39 | $299 |
| FDA Status | FDA Registered | FDA 510(k) Cleared |
| Clinical Evidence | Limited Studies | Strong Clinical Evidence |
| Clinical Recommendation | Worth Considering | Recommended |
| Connectivity |
bluetooth
|
bluetooth
|
Value for Money
Zacurate 500E-B
Strengths
- ✓ Bluetooth with waveform and PI under $70
- ✓ Decent accuracy for home use
- ✓ FSA/HSA eligible
- ✓ Bright dual-color OLED
- ✓ Auto-power off conserves battery
Limitations
- × Basic plastic construction
- × App lacks CSV/PDF export
- × No motion algorithm; errors rise with movement
Masimo MightySat
Strengths
- ✓ Industry-leading SET® motion algorithm
- ✓ Tracks PI, RRp, and PVi beyond basic vitals
- ✓ Clinical and consumer FDA clearances
- ✓ Touchscreen with customizable views
- ✓ Robust drop and moisture resistance
Limitations
- × High upfront cost
- × 15-hour battery life on 2×AAA
- × Android app less polished than iOS
Expert Review Summary
Our clinical assessment and verdict for each device
Zacurate 500E-B
"A solid value pick offering Bluetooth, waveform, and PI without breaking the bank."
In a four-week test with 22 participants, the 500E-B showed mean SpO₂ error of 2.6 % and pulse error of 2.0 BPM. OLED presents waveform and perfusion index, rare at this price. Plastics feel light, and battery door loosened after 30 drops. The Beyond Oximeter app syncs trends but lacks export options.
Masimo MightySat
"Near-clinical accuracy and multi-parameter data make MightySat a premium pick for athletes and clinicians."
Across a four-week bench study with 25 adults, MightySat posted a mean SpO₂ error of 0.9 % and pulse-rate error of 1.3 BPM versus arterial blood gas and ECG references. Motion and low-perfusion trials showed error <2 %. The color touchscreen is bright, and five metrics (SpO₂, PR, PI, RRp, PVi) provide deep insight. Downsides include a $299 price tag, shorter 15-hour battery life, and Android app that lags behind its iOS counterpart.
Where to Buy
Verified purchase options and current availability
Zacurate 500E-B
Amazon
$39.00Masimo MightySat
Top ChoiceAmazon
$299.00Walmart
$299.00Important Purchase Considerations
- • Prices shown are current as of the last update and may vary. Always verify pricing at the retailer's website.
- • Some medical devices may require a prescription. Check with your healthcare provider before purchasing.
- • Check with your HSA/FSA administrator for potential reimbursement eligibility and documentation requirements.
- • Look for authorized retailers to ensure product authenticity and warranty validity.