Zacurate 500B-B Wireless Bluetooth Fingertip Pulse Oximeter, Blood Oxygen Monitor with Free App, SpO2, Plethysmograph, and…
Zacurate
Best for
Best with Bluetooth logging
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Current price
$44.99
Updated May 17, 2026 · 1 min read
Sources behind this verdict
6 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, the Zacurate 500B-B is the only Bluetooth-equipped option in this pool with enough review volume to evaluate. It shares the Zacurate Pro Series sensor lineage that pmc.ncbi.nlm.nih.gov measured at roughly 90% accuracy on the non-Bluetooth 500DL — that's a brand-level inference, not direct evidence for this exact SKU, and the synthesis treats it accordingly. Verified-purchase reviewers on amazon.com and walmart.com describe quick readings, consistent results, and the appeal of pairing with a free companion app for trend tracking.
What reviewers liked
- Only Bluetooth-equipped unit in the pool with meaningful review volume — enables app-based trend logging
- Shares the Zacurate 500-series sensor design that pmc.ncbi.nlm.nih.gov validated at ~90% accuracy
- Full readout: SpO2, pulse rate, perfusion index, and plethysmograph
- Verified-purchase reviewers on Walmart cite consistent, fast readings
Where it falls short
- Only ~1,573 Amazon reviews — much smaller validation base than the 500DL's 241k
- No high-trust expert review in the candidate signals tested this specific Bluetooth model
- Still a spot-check device — not a continuous overnight logger, per r/SleepApnea consensus on what's needed for ODI tracking
- Companion-app dependence introduces a software reliability variable that the standalone units avoid
Across the reviewers we read, the Zacurate 500B-B is the only Bluetooth-equipped option in this pool with enough review volume to evaluate. It shares the Zacurate Pro Series sensor lineage that pmc.ncbi.nlm.nih.gov measured at roughly 90% accuracy on the non-Bluetooth 500DL — that's a brand-level inference, not direct evidence for this exact SKU, and the synthesis treats it accordingly.
Verified-purchase reviewers on amazon.com and walmart.com describe quick readings, consistent results, and the appeal of pairing with a free companion app for trend tracking. r/Anxiety community comments specifically reference Zacurate's 500-series readings staying within a normal 93–98 range during use. The bullets describe a full plethysmograph and perfusion-index display, putting it feature-closer to the Innovo than to the budget tier.
The caveats are real: only 1,573 Amazon reviews so the base is much smaller than the 500DL's 241k, no high-trust publication in the candidate signals reviewed this specific model, and app-based health-tracking devices in general get mixed reception from specialist subreddits when users expect continuous overnight logging — which a spot-check Bluetooth oximeter still isn't designed for.
- Advanced Features Through Smart App Integration - The Zacurate 500B-B Bluetooth Pulse Oximeter is the latest innovation in the Zacurate line, combining multiple advanced features in one compact device. Pair it with the free Beyond Oximeter App ( IOS and Android compatible) for effortless real-time monitoring and recording of SpO2, pulse rate, and pulse strength. It supports multiple users and long-term data storage.
- Accurate & Reliable
- Features an upgraded OLED display and enhanced sensor for precise SpO₂ and pulse rate readings — even at low blood perfusion levels.
- Plethysmograph & Perfusion Index Indicators
- Verify the accuracy of your readings with built-in visual indicators, helping eliminate doubts about measurement reliability
- Perfect for Sports, Aviation, or Home Use
- Ideal for climbers, skiers, bikers, aviators, and anyone who wants to monitor SpO₂ and pulse rate on the go. Use before or after exercise — remain still while measuring. Not intended for continuous overnight monitoring or recording.
- Easy to Use – Simply insert your finger fully into the chamber, press the power button, and keep your hand still. Movement can affect accuracy. Wait a few seconds for the device to stabilize and display your results.
- Fits a wide Range of Finger Sizes - Finger chamber with SMART Spring System accommodates users age 12 and above.
- Complete Accessory Set
- Includes 2× AAA batteries (ready to use right out of the box), and a lanyard for easy carrying. Backed by a 12-month warranty and USA-based technical support.
Health is wealth. Monitor your blood and oxygen level with Zacurate. Watch Zacurate Pro Series 500DL Fingertip Oximeter Monitor Review here…
I have a zacurate 500bl pulse oximeter and when I test my oxygen levels, it ranges between 93 and 98. When I get 93 I test again and it'll go to 95.
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