What the blue Zacurate 500B-B displays
The screen shows estimated oxygen saturation, pulse rate, perfusion index, and a pulse waveform. The waveform shows the shape of the pulse signal, while PI describes its pulsatile component at the finger.
- Display
- OLED with SpO₂, pulse rate, PI, and waveform.
- Connectivity
- Bluetooth with Beyond Oximeter.
- Reviewed variant
- Blue Zacurate 500B-B.
Zacurate lists a color OLED screen with several display layouts. Start with the SpO₂ and pulse labels. Use the waveform and PI to understand whether the finger signal is steady during the check. See the perfusion index guide for what each part of the display tells you.
Saving readings on your phone
Zacurate lists Beyond Oximeter for the 500B-B. Check phone compatibility and follow the pairing instructions. If you want to keep a result, confirm that it appears in the app.
Bluetooth is useful when it fits the way you keep your log. If you want to review a result later, check its time, value, and profile in Beyond Oximeter. For an occasional check, you can also read the display and write down the number. Before changing phones, check how you will keep your older readings.
Spot checks and recorded sessions
This fingertip clip is designed for taking individual readings. To review a longer period, compare the sensor and session length of ring and wrist pulse oximeters.
A history of spot checks collects readings taken at different times. For an entire session, look at a ring or wrist monitor’s sensor type, recording interval, and storage. Choose the format that matches what you need to observe.
What can affect the signal
Sensor placement, hand temperature, and movement can affect the signal. Follow the instructions and see how to read the perfusion index.
If the numbers change as your finger moves, wait until you can hold your hand still and check the clip’s fit. A cold hand can also make the signal harder to read. To compare checks on different days, note the time and the conditions. Medical interpretation depends on the person’s situation.
What to check before buying
Check the Amazon.com listing for Zacurate 500B-B Blue with Bluetooth and the exact variant before ordering. Delivery and availability depend on the offer and your ZIP code.
Match 500B-B and the blue finish on the box and listing. The Zacurate comparison also covers the white 500E-B and the display-focused 500C Elite and 500DL Pro Series. Check the listing for the version you choose to confirm the contents and connectivity.