US buying guide
Fingertip pulse oximeters: compare eight US models
Compare eight fingertip pulse oximeterssold on Amazon.com. Start with fit and display, then decide if you want a perfusion index or a reading history on your phone.
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Which fingertip pulse oximeter fits your use?
Quick spot checks
Santamedical SM-1100S and Beurer PO50 have simple controls for spot checks.
Perfusion index and waveform
Innovo iP900AP Deluxe shows both on the screen. For another feature comparison, see the Zacurate 500C Elite vs. 500DL Pro Series.
Readings on your phone
Zacurate 500B-B and 500E-B work with Beyond Oximeter. The US Beurer PO60 has its own pairing instructions.
Fingertip pulse oximeter comparison
If you are choosing between the two Zacurate clips, see the Zacurate 500C Elite vs. 500DL Pro Series comparison for differences in display, perfusion index, and alerts.
For spot checks, start with fit and display readability. For multiple readings, check what the device stores and how you retrieve it.
| Model and link | Consider this model for | Display, recording, and accessories |
|---|---|---|
 Beurer PO60 Bluetooth, ref. 454.73 Affiliate link View on Amazon.com | Bluetooth transfer | The display shows SpO₂ and pulse rate. The North American manual lists two AAA batteries, a strap, and a case. |
 Zacurate 500C Elite BlackAffiliate linkView on Amazon.com | Perfusion index (PI) | SpO₂, pulse rate, and PI on the OLED display. |
 Santamedical Generation 2 SM-1100S SilverSee product details and offer Affiliate linkView on Amazon.com | One button and a rotating screen | Rotating OLED, two AAA batteries |
 Beurer PO50See product details and offer Affiliate linkView on Amazon.com | Color screen for spot checks | Four views, strap, and batteries |
 Innovo iP900AP Deluxe WhiteSee product details and offer Affiliate linkView on Amazon.com | On-device perfusion index and waveform | OLED, PI and pulse waveform, two AAA batteries |
 Zacurate 500B-B BlueSee product details and offer Affiliate linkView on Amazon.com | Phone history | OLED, Bluetooth, PI, and pulse waveform |
 Zacurate 500E-B WhiteSee product details and offer Affiliate linkView on Amazon.com | Bluetooth and multiple screen orientations | OLED, Bluetooth, PI, and pulse waveform |
 Nonin TruO₂ OTC 3250See product details and offer Affiliate linkView on Amazon.com | Documented over-the-counter use and fit for adults | Spot checks, finger thickness of 8–25 mm |
Listings reviewed November 11–12, 2026. Check the exact variant and delivery for your ZIP code. The comparison uses manufacturer documentation and US listings.
Choose a fingertip pulse oximeter by feature
| What you need | Model | What to check |
|---|---|---|
| Bluetooth with the PO60 | Beurer PO60 Bluetooth · 454.73 Affiliate linkView on Amazon.com | SpO₂ and pulse rate on screen. Bluetooth. |
| See the pulse signal | Zacurate 500C Elite Mystic Black Affiliate linkView on Amazon.com | Shows a perfusion index and pulse waveform. |
| One-button spot checks | Santamedical Generation 2 SM-1100S Affiliate linkView on Amazon.com | SpO₂ and pulse rate. Rotating OLED display. |
| Read the numbers on-screen | Beurer PO50 Affiliate linkView on Amazon.com | Four display views for SpO₂ and pulse rate. |
| Check the perfusion index and waveform | Innovo iP900AP Deluxe White Affiliate linkView on Amazon.com | SpO₂, pulse rate, and perfusion index. Pulse waveform. |
| Transfer readings to a phone | Zacurate 500B-B Affiliate linkView on Amazon.com | Bluetooth with the Beyond Oximeter app. |
| Rotating display and phone sync | Zacurate 500E-B Affiliate linkView on Amazon.com | SpO₂, pulse rate, and perfusion index. Bluetooth sync to Beyond Oximeter. |
| Check fit for adults | Nonin TruO₂ OTC 3250 Affiliate linkView on Amazon.com | For adults 18 and up, with a finger thickness of 8–25 mm. |
Video: How to choose a fingertip pulse oximeter
Compare screen readability, perfusion index, and which models can send readings to your phone.
Fingertip pulse oximeters for spot checks and Bluetooth records
For spot checks with simple controls, compare the Santamedical SM-1100S and the Beurer PO50. For on-device perfusion index and pulse waveform, see the Innovo iP900AP. For a phone history, compare the Zacurate 500B-B with the 500E-B. For an OTC model with documented adult use, see the Nonin TruO₂ OTC 3250.
Beurer PO60 Bluetooth · 454.73
- SpO₂ and pulse rate on screen
- Bluetooth
- Two AAA batteries
The display shows estimated SpO₂ and pulse rate. Reference 454.73 has Bluetooth and runs on two AAA batteries. Check the pairing instructions for this version.
Product details and documentation
View on Amazon.comAffiliate linkZacurate 500C Elite Black
- SpO₂, pulse rate, and perfusion index
- OLED screen and pulse waveform
- Sports and aviation
Fingertip model with an OLED display that shows estimated SpO₂, pulse rate, and perfusion index (PI). The Mystic Black variant is for spot checks. See Zacurate’s listing for its intended use.
View on Amazon.comAffiliate linkSantamedical Generation 2 SM-1100S Silver
- SpO₂ and pulse rate
- Rotating OLED display
- Two AAA batteries
One-button clip for spot checks of SpO₂ and pulse rate. The OLED screen rotates and the device uses two AAA batteries. The manufacturer markets it for sports and aviation.
View on Amazon.comAffiliate linkBeurer PO50
- SpO₂ and pulse rate
- Four display views
- Spot checks
The US PO50 shows SpO₂ and pulse rate on a color display with four views. The documented package includes a strap and batteries. Look for the PO50 model number on the box.
View on Amazon.comAffiliate linkInnovo iP900AP Deluxe White
- SpO₂, pulse rate, and perfusion index
- Pulse waveform
- Sports and aviation
The white iP900AP Deluxe shows perfusion index and pulse waveform on an OLED screen. It uses two AAA batteries. This is the iP900AP without Bluetooth.
View on Amazon.comAffiliate linkZacurate 500B-B Blue
- SpO₂, pulse rate, and perfusion index
- Bluetooth sync to Beyond Oximeter
- Blue finish
The OLED shows SpO₂, pulse rate, perfusion index, and pulse waveform. Bluetooth lets you review readings in Beyond Oximeter. Check finger size and phone compatibility before buying.
View on Amazon.comAffiliate linkZacurate 500E-B White
- SpO₂, pulse rate, and perfusion index
- Bluetooth sync to Beyond Oximeter
- White finish
The white version has multiple OLED viewing orientations, a perfusion index, a pulse waveform, and Bluetooth for Beyond Oximeter. Select the white 500E-B on Amazon.com.
View on Amazon.comAffiliate linkNonin TruO₂ OTC 3250
- SpO₂ and pulse rate
- Finger thickness from 8 to 25 mm
- Adults ages 18 and up
The manufacturer lists the over-the-counter 3250 for spot checks of SpO₂ and pulse rate in adults 18 and older. The manual specifies a finger thickness of 8 to 25 mm. See the instructions for its intended use and limitations.
View on Amazon.comAffiliate linkWhat to check before buying
- Finger fit. Check the fit range for the exact model. For a child or infant, review the size and intended use with a clinician.
- Display and recording. SpO₂ estimates oxygen saturation. PR is pulse rate. Check that you can read both and that any history feature meets your needs before choosing by app or alerts.
- Intended use. The FDA distinguishes wellness and sports oximeters from medical devices. If a clinician asked you to monitor oxygen at home, ask which device to use and follow their instructions.
How to read the numbers in context
Circulation, cold, movement, nail polish, and skin pigmentation can affect the reading. Follow the manual, keep your hand still, and wait for the number to settle. If symptoms are severe or worsening, seek medical care without relying on one reading. FDA recommendations.
FDA information on pulse oximeter performance and skin pigmentation.
Questions before buying
Do I need Bluetooth?
Bluetooth can help if you want to review a history on your phone. For spot checks, start with fit and display readability.
What about a child or longer recording?
See the pediatric guide or ring and wrist models, depending on your needs.
Other fingertip pulse oximeters
| Model and link | Consider this model for | Display, recording, and accessories |
|---|---|---|
 Zacurate 500DL Pro Series BlackAffiliate link View on Amazon.com | Spot checks on an LED screen | Shows estimated SpO₂ and pulse rate. Includes two AAA batteries, a silicone cover, and a lanyard. |
| Wellue Fingertip Pulse Oximeter Black Affiliate link View on Amazon.com | Reviewing recent readings on the device | The listing specifies up to 12 stored readings, audible and visual alerts, two AAA batteries, a pouch, and a lanyard. |