7 Best Pulse Oximeter

Do you have a symptom of shortness of breath or chronic lung disease and a complicated heart condition, then pulse oximeter is a must device to monitor pulse rate & blood oxygen levels. If you also suffer from respiratory conditions like COPD, mesothelioma, asthma and sleep apnea, then having a best pulse oximeter can regularly monitor pulse rate & blood oxygen saturation (SO2) levels.

Do you want accurate results in a matter of seconds with the help of digital pulse oximeter? If you want a quick and safe measure of the oxygen saturation level in your body then these 7 best pulse oximeters could monitor pulse rate & blood oxygen levels.

Here’s a Quick List of the Best Pulse Oximeters for all categories. Check pulse oximeter price on Amazon-(pulse oximeter amazon)

  1. Best wrist pulse oximeter ViATOM Wrist Blood Oxygen Saturation Monitor
  2. Best Fingertip Pulse Oximeter Mibest Rose Gold Dual Color OLED Finger Pulse Oximeter 
  3. Best Pulse Oximeter for Medical Professionals: ViATOM Wearable Oxygen Monitor
  4. Blood pressure monitor with pulse oximeter: Wellue O2Ring Oxygen Tracker 
  5. Best Finger Pulse Oximeter: Zacurate Pro Series 500DL
  6. Best Pulse Oximeter for EMT: Deluxe SM-110 Two Way Display Finger Pulse Oximeter
  7. Best Pulse Oximeter for Pediatrics: Children Oxygen Monitor

The Best Pulse Oximeter for Your Needs

What is the most accurate pulse oximeter? There are different types of pulse oximeters on the market. Each category is meant to serve a particular purpose. A few categories are discussed below:

1. Best Wrist Pulse Oximeter for Overnight Monitoring: ViATOM Wrist Blood Oxygen Saturation Monitor

Best wrist pulse oximeter. Viatom the best pulse oximeter for overnight monitoring comes with a patented smart ring sensor that can supports 12-16h continuously uninterrupted monitoring. It is designed for the patients of sleep apnea, snorer, COPD, Pneumonia, asthma, heart patients, the aviators can get the best user experience. Simply wear it on your wrist before you sleep; it will continuously track and record your oxygen level in blood, pulse rate, and body movement in every second.

This sleep oxygen monitor has a silent vibrator system; it will vibrate as soon as your oxygen in the blood drops below the standard (per-set); also, the smart ring will gently nudge you to change your sleeping position. It won’t disturb your partner’s sleep because it silently vibrates and doesn’t beep loud.    

Using APP, available on Wellue website, you can transfer data from oximeter to your phone. On the APP’s dashboard, you can see the detailed analysis of your overnight blood oxygen level, heart rate, body movement; also, you can check whether there is any hypoxia episode during sleep. You can export the overnight oximetry report using PC software; also, you can share the report with your doctor in PDF/CSV format.

This Viatom Oxygen Monitor is easy to use; it starts automatically once you wear it. To activate its display or to stop the vibration simply overturn your wrist. This device runs on Li-ion rechargeable battery comes with the package, and it lasts 12-16 hours. Device dimension: 3.7 x 3.7 x 2.8 inches; it weighs: 4.8 ounces. let us know your welby pulse oximeter reviews in our comment section

2. Best Fingertip Pulse Oximeter: Mibest Rose Gold Dual Color OLED Finger Pulse Oximeter 

Do you want an efficient One Button Operation that your SPO2 Sensor will check and display in real-time? Mibest pulse oximeter is easy to use for checking your pulse signal strength and can measure SpO2, PR, Pulse bar graph which great accuracy. It is one of the medical grade pulse oximeter

Mibest Pulse Oximeter blood oxygen saturation monitor has been launched with dual color digital OLED display. It comes with one power-button facility which makes it easier to use.

It gives the best user experience to sports and aviation enthusiastic people, e.g. mountain climbers, bikers, trainers, aviators, and anyone who wants to check their SpO2 on the spot. Its algorithm based sensor can instantly and accurately check your SpO2, PR, pulse strength and can display the figures and a pulse bar graph in real-time. The fingertip of this device perfectly designed for both adult and pediatric fingers.  And best fingertip pulse oximeter

Mibest pulse oximeter system includes 10 levels of adjustable brightness, 4 display directions and modes, and a low battery indicator icon which helps to replace the batteries on time.  

This precision Mibest pulse oximeter is very convenient to use and gives you the accurate measurement of SpO2, and its light weight (i.e. 3.2 ounces) makes it portable, which allows you to use it anywhere you go.

It comes with 2 AAA alkaline batteries, a pulse oximeter case, and a length-adjustable lanyard, which means your portable oxygen meter is ready to use right after you get it out of the box.

3. Best Pulse Oximeter for Medical Professionals: ViATOM Wearable Oxygen Monitor

VIATOM Wearable Oxygen Monitor, WearO2 is one of the best pulse oximeters on the market because of its best unique features: finger wearable device, built-in memory, rechargeable, smart vibration, report in APP, and life waterproof. This professional pulse oximeter comes with a soft and comfortable patented ring sensor facility, and it never will go off from your finger during your regular activity.

WearO2 can continuously monitor and record your oxygen level in blood, pulse rate, and motion; also, it displays the figures in real-time.  Its rechargeable Lithium Polymer battery on one charge can continuously run this device up to 16 hours.

Using the free Vihealth APP you can see the graphic reports of O2 saturation, heart rate trends, and motion on your phone. Based on the data you can improve your health management and can change your life-style.

ViATOM Wearable Oxygen Monitor, WearO2 comes with an adjustable vibration system. Its vibrator system in the finger ring sensor will automatically activate as soon as your SpO2 falls below the pre-set standard.

Note that the Wear O2 is not designed for sleep apnea patients and it doesn’t display readings during sports.

4. Blood pressure monitor with pulse oximeter: Wellue O2Ring Oxygen Tracker 

The lightest, smallest, most comfortable ring sensor for overnight continuous monitoring, durable, and adapt to most fingers. The ring design is comfortable and adjustable and it is a medical grade pulse oximeter that hospitals use the most.

You will get 12 month Worry-Free Warranty, Lifetime technical support, Top grade customer service of fast response within 12h. The device runs automatically when you wear it. It has adjustable vibration feedback for low oxygen level and irregular heart rate.

5. Best Finger Pulse Oximeter: Zacurate Pro Series 500DL

This new Zacurate Pro Series 500DL pulse oximeter is very fast than the previous model CMS 50DL; the new one shows pulse rate and pulse strength within 10 seconds, and it displays the figure on its large digital LED display. Interestingly its finger chamber fits in all range of finger sizes except those are below 12-years-old. So Best Finger Pulse Oximeter ever!

Zacurate pro series 500dl pulse oximeter was designed for sports enthusiasts, aviators, trainers, bikers, mountain climbers or anyone who wants to obtain their SpO2 on the go.This new zacurate device represents 4 best features: it shows 100% accurate SpO2 which makes it very reliable, it’s finger chamber is latex-free and is designed to cause less allergic reactions, the LED display faces towards its user so that the figure is easily to read, and hassle-free battery installation and removal. 

Besides, a few accessories come with the package: powerful 2X AAA batteries which allow you to use this device right after you get it out of the box, and it offers a silicon cover to protect the device from dirt or any sort of physical damage; also, it provides a lanyard for carrying convenience. It is best portable pulse oximeter

This best pulse oximeter adds some additional features, such as upon turning on the device it automatically shows its battery charge icon, and the icon instantly disappears. If the battery icon remains on the display, it indicates a low battery. The device turns off automatically in 16 seconds after you remove your fingers from its finger chamber.

It is worth mentioning that this upgraded device works 100% accurately with super speed; also, it works in a tough environment, and one can buy it at an affordable price.

6. Best Pulse Oximeter for EMT: Deluxe SM-110 Two Way Display Finger Pulse Oximeter

Gurin’s newly upgraded Deluxe SM-100 Finger Pulse Oximeter offers two-way display feature which allows you to read figures from two different directions. This new device comes with a redesign and some major improvements. It’s also known as Santamedical Generation 3 Deluxe Pulse oximeter. Simple one power-button makes it easy to operate.

Some unique features have intensified its reliability: it can read your SpO2 and pulse rate accurately and very fast; it shows the figures on its large digital LED display. By default setting its display faces at its user, but slightly touch at the bottom makes it face away from its user.

Deluxe SM-100 is particularly designed for people who are sports enthusiastic like mountain climbers, skiers, bikers, but anyone can also take the best user experience of this fastest device.

Its fingertip design makes it perfect to accommodate the fingers of both adult and infant. Its small dimension (3.9 x 2.3 x 2.9 inches) and lightweight (2.4 ounces) make it portable to carry anywhere you go. It comes with a lanyard for neck/wrist usage, a soft carrying case with belt lope, and 2 AAA batteries i.e. it’s ready to use right after you get it out of the box

7. Best Pulse Oximeter for Pediatrics: Children Oxygen Monitor

Children Fingertip Oxygen Monitor is specially designed for children age between 3 and 12 which comes with a soft finger chamber and in adorable design; a bonus children digital thermometer also comes with a box.

This algorithm-based device will read your child’s blood oxygen saturation level, pulse rate, and perfusion index more accurately than ever; also, this Children Oxygen Monitor is built-in anti-motion technology which ensures consistency in readings. And its alarm will beep if your child’s oxygen level and pulse rate fall below the standard.

If your child is having any respiratory infection and they are experiencing productive or dry cough and tachypnea i.e. breathes rapidly; then, you can instantly check your child’s oxygen level and pulse rate using this device. Based on the reading you can wisely decide whether you need to take your child to a doctor (Pulmonologist) or directly to the hospital.

Children Oxygen Monitor comes with a comfortable and soft fingertip chamber will admirably suit your child’s tender skin and its adorable design makes it acceptable to children.This device weighs 0.32 ounces; a carry case and 4 AAA Batteries come with the package.

Bonus* Innovo Pulse Oximeter

Innovo pulse oximeter stands out from the rest because of its accuracy and reliability.Consistently beat other pulse oximeter in terms of accuracy and reliability during clinical tests. Another reason why we choose the Innovo Deluxe Pulse Oximeter is its affordability and best finger pulse oximeter.

Features of  Innovo Deluxe Pulse Oximeter 

 1) Auditory alarm to warn you when your SpO2 and Pulse Rate are beyond set limits. 2) Auditory Beeps for every detected pulse. 3) Adjustable brightness.

What is a Pulse Oximeter?

pulse oximeter is a small, lightweight digital device used to monitor your blood oxygen level. Our heart pumps oxygen rich-blood into arteries that carry the oxygenated blood to all parts of the body, including the extremities. To measure the oxygen level in your blood or the oxygen saturation level (SpO2) you can administer a test at your home using a pulse oximeter. Moreover, by using a pulse oximeter, the test is painless and noninvasive.

There are no needles and no pain involved in oximetry measurement.

It comes with a fingertip chamber or a probe sensor, finger ring sensor, or wearable on the wrist.  You can put the probe sensor on your finger or toe.  The pulse oximeter (ox) displays the measured amount shown on the screen reflects the saturation of your red blood cells with oxygen.

Pulse oximeter uses-Why do you need a pulse oximeter?

Pulse oximeter uses are very crucial. A pulse oximeter is designed to measure SpO2, and your SpO2 measurement refers to the oxygen saturation level or the amount of oxygen in your blood. The SpO2 reading 95% or above indicates that your oxygen level is normal. If your SpO2 reads below 92%; then, it is an indication that the oxygen level in your blood is poor, and you must consult to your doctor or a hematologist.

A pulse oximeter can even detect the small changes in your SpO2. It is commonly used to observe sleep apnea, pulse rate, lung medication effect, ventilator condition; also, SpO2 during exercise, aviation, and mount climbing.

If you are having a lung disease, it is significantly important to check your SpO2 level regularly or multiple times in a day. Most people are advised to maintain at least 89% of SpO2, otherwise, it can lead to cyanosis or death of their tissues i.e. infarction. For most people a pulse ox is an essential tool to measure their SpO2 frequently.    

A pulse oximeter also measures your pulse rate i.e. beats per minute. An adult person’s heart-beat range from 60 to 100. If your pulse rate is less than 60 BPM it is called bradycardia, and if your pulse rate is above 100 BPM it refers to tachycardia; under both of these circumstances you must visit a cardiologist.

Some pulse oximeter can also read perfusion index (PI) i.e. it can measure your pulse strength. 

To get an accurate understanding of your SpO2, pulse rate, and pulse strength within a few seconds at anywhere, you should take a pulse oximeter in your home for your personal usage.   

Which finger is best for pulse oximeter

The highest average SpO2 value was measured from the right middle finger (98.2 % ± 1.2) and it was statistically significant when compared with the right little finger and left middle finger. The second-highest average SpO2 value was measured from the right thumb and it was statistically significant only when compared with the left middle finger (the finger with the lowest average SpO2 value) (p < 0.05). SpO2 measurement from the fingers of both hands with the pulse oximetry, the right middle finger, and right thumb have a statistically significantly higher value when compared with the left middle finger in right-hand dominant volunteers. We assume that the right middle finger and right thumb have the most accurate value that reflects the arterial oxygen saturation. Source

Pulse oximetry readings can be affected by

If you are wearing dark fingernail polish and long artificial nails with artwork or if your fingers are not clean, the pulse oximeter readings will not show and may not work properly. Pulse oximetry readings can be affected by
-External Interference.
– Fingernail Polish and Pressed on Nails.
-Skin Pigmentation.
-Intravenous Dyes

False low pulse oximetry reading

Can pulse oximeter give false readings? Pulse oximeters can give a falsely high reading in the presence of carbon monoxide. Causes of false high or low spo2 readings can be happened the presence of methemoglobin (1) anemia combined with hypotension (2,3) motion (4), dark skin pigmentation including certain skin dyes (5), blue or green fingernail polish (6), and severe tricuspid regurgitation (7).

Buying Guide for Pulse Oximeter

When you are purchasing a pulse oximeter you need to take into account a few things: its accuracy, portability, display quality, affordability, fingertip sensor and so-forth.

  • A pulse oximeter must measure your SpO2 accurately with a real accuracy of +/- 2%, and it must also provide pulse rate accuracy within +/-5 BPM within 30-240 beat per minute, and the figures must show in real-time.
  • The device must show SpO2, pulse rate, pulse strength in real-time, and low battery indicator must be visible.
  • It must come with a vibration alarm system so that if your SpO2 or BPM don’t meet your pre-set stander the vibration alarm must notify you about it. 
  • It should be portable and lightweight so that you can carry it and check your SpO2 and BPM with this device at anywhere.
  • The fingertip must not contain latex material and must be hypoallergenic.
  • Don’t choose a pulse oximeter for your child which is meant for adult.
  •  Display must be either OLED, LED or LCD. And it must offer 2, 4 or 6 display directions.
  • Some pulse oximeters come with APP option, and they allow you to export data in your computer so that you can study them and share them with doctor.
  • Consider the battery life and memory of a pulse ox meter. Try to choose those have long-lasting battery and are built-in memory.
  • You also need to consider for which purpose you are aiming to buy a pulse oximeter because some are meant for sports, aviation, or normal usage. Different pulse oximeter serves different purpose e.g. if a pulse oximeter is designed for home use, it cannot be used for professional healthcare purposes.
  • While you are shopping a pulse oximeter, check whether it fits to your fingers, if it doesn’t fit properly it won’t show you the accurate SpO2 and also, it may go off from your finger during regular activities. Concerning children, you must frequently check whether their new pulse oximeter creates any tenderness on their fingers.
  • To check whether a pulse ox is accurately measuring your pulse rate, you can manually check your pulse rate; then, match your manual measurement with the pulse ox.
  • As per WHO, if you want to check whether your pulse oximeter is working; then, put the probe on your own finger to see whether it is working.

Types of pulse oximeters

There are three types of pulse oximeters on the market which are medical grade pulse oximeter: Buy here-pulse oximeter amazon,pulse oximeter walmart

  1. Handheld Pulse Oximeters: Such oximeters come with a clipped sensor can be plugged into the handheld pulse-oximeter using a cable. .
  2. Finger Pulse Oximeters: There are three types finger pulse oximeters available on the market:
  3. Traditional Duckbill sensor or probe: Such pulse oximeters offer a fingertip chamber, and you need to put the chamber on your finger to measure your SpO2 and pulse rate. You can choose one of these finger pulse oximeter:
  4. EMAY Sleep Oxygen Monitor
  5. EMAY Children Fingertip Oxygen Monitor
  6. Concord Sapphire Fingertip Pulse Oximeter
  7. Mibest Silver Fingertip Pulse Oximeter-best fingertip pulse oximeter
  8. Innovo Deluxe Fingertip Pulse Oximeter
  9. deluxe sm-100 finger pulse oximeter
  10. Zacurate Pro Series 500DL
  • Finger Wearable Device: Some users have found it very uncomfortable to use the traditional fingertip sensor. These below pulse oximeters come with finger ring sensor to free your finger: 
  • VIATOM Wearable Oxygen Monitor- WearO2,
  • Wireless Wellue KidsO2™,
  • BodiMetrics O2 Vibe Sleep & Fitness Monitor,
  • innovo pulse oximeter

C) Wrist Pulse Oximeters: You can wear such pulse oximeter over your wrist to measure SpO2 and pulse rate. 

  • Viatom Overnight Wrist Oxygen Monitor,
  • The Innovo® 50f Pulse Oximeter,

How to read a pulse oximeter?

The measurement that is administered to get an insight of the oxygen level in your blood is called SpO2 i.e. oxygen saturation level. A pulse ox can be used to conduct this measurement; however, most pulse ox give a +/- 2% reading i.e. pulse oximeter accuracy range reading may be 2% higher or 2% lower than your actual SpO2 level. For example, if a pulse ox reads your SpO2 is 92% i.e. your actual SpO2 may be either 90% or 94%. Therefore, this measurement is not 100% accurate, but it is easy to administer this test and doctors often rely on this test.

If your pulse oximeter gives a reading of your SpO2 level between 95% and 100%; then, it means your SpO2 is normal. However, this rule doesn’t apply to the COPD patients and respiratory. If your pulse ox shows your SpO2 is 95% it means your blood contains 95% oxygenated blood and 5% deoxygenated blood.

However, it is difficult for COPD patients and respiratory patients to maintain 95% SpO2 level; therefore, their doctors prescribe them a certain SpO2 level must be maintained.

It is obvious that your SpO2 level may change throughout the day because your everyday activities may include low-energy and high-energy activities.

If your SpO2 level falls below 95%, it is an indication that you are having a hypoxemia condition, and if the condition is severe, you can have a cyanosis i.e. your skin and mucous membranes will become bluish or discolor.

If you have a chronic lung disease; then, it is significant for you to be aware of what is the normal SpO2 for you; consultant with your doctor in this regard.

How does a pulse oximeter work – How a pulse oximeter works?

When you put the fingertip chamber or probe on your finger, ear lobe or toe; a beam light sensor goes through your skin and blood; then, your blood absorbs a certain amount of beam light, and the other side of the probe detects it. The amount of beam light absorption indicates whether your blood is oxygenated or deoxygenated. Basically, this device measures SpO2 by calculating the changes of light absorption in your blood. as we discussed how does a pulse oximeter work.

The probe must be very well positioned on your finger to get an accurate reading. If the probe is very tightly fitted, it will constrict your blood circulation or if it is too lose it will fail to measure your SpO2 correctly.  Pediatric pulse oximeters are made for infants (less than one-year-old). An adult probe can be put on a child’s big toe or thumb as long as it gives a good signal. Some pulse oximeters offer an ear probe that can be used on the ear lobe.

Note that a few situations can prevent a pulse oximeter to measure your SpO2 accurately: wearing nail polish or any color pigment on the finger, bright light or sunlight, finger movement, poor blood perfusion.

To read SpO2 by an oximeter, there must be a good flow of blood through your finger. Sometimes blood flow may be interrupted because of peripheral vasoconstriction (PV). PV is commonly happened due to cold, poor blood circulation, or hypovolemia.

If a patient has inhaled a considerable amount of smoke; then, a significant amount of carbon monoxide (CO) can be found in his hemoglobin. Oximeters often fail to detect CO, as a result, they read SpO2 inaccurately.

Which finger is best for a pulse oximeter?

Putting probe on the middle finger is the best way to measure SpO2 because it is believed that middle finger contains the higher perfusion. Besides, index finger or middle finger is commonly used in clinical practice to measure SpO2 and pulse rate. To receive the accuracy, the finger must fit into your finger, and if the toe or finger is big compared to the probe; then, it will fail to measure your SpO2 accurately.   

Pulse Oximeter Readings Chart

pulse oximeter readings chart
pulse oximeter readings chart

What Are the Risks of Pulse Oximetry?

Experiencing any harm using a pulse ox is very unprecedented. Even doctors often administer SpO2 test using a pulse ox, and they also consider any medical-grade SpO2 report released by a pulse ox.

However, if you are using a poor quality pulse ox; then, it may involve risk factors because if it shows an inaccurate result, your doctor won’t be able to carry out your treatment properly.

Frequently Asked Questions

How accurate are home pulse oximeters?

Home pulse oximeters are almost accurate. Most pulse ox give a +/- 2% reading i.e. the reading may be 2% higher or 2% lower than your actual SpO2 level. Simply, Pulse oximeter accuracy can give a reading 2% over or 2% under what your saturation would be. if your oxygen saturation reads 92% on the pulse oximeter, it may be anywhere from 90 to 94%.

How do I choose a pulse oximeter?

When you are choosing a pulse oximeter, a few important features of a pulse ox must be taken into account: its real-time readings, accuracy, design, features, vibration alarm, portability, memory, battery life, compatibility, safety, fingertip chamber, ring sensor, display, age variation.

What is a good heart rate and oxygen level?

For an adult person, ideal heart rate is between 60 and100. And ideal Oxygen Saturation level (SpO2) is between 95% to 100%, and you must consult your doctor if the level falls below 93%

Which finger do you use for pulse oximeter?

In clinical practice, middle finger or index finger is commonly used for pulse oximeter.

What is a good pulse rate?

60-100 beats per minute.

What is a woman’s normal pulse?

Gender difference doesn’t affect the pulse rate. But women have the higher resting heart rate at 67.4 BPM while men have at 64.6 BPM.

What is a normal heart rate by age?

Children’s ideal pulse rate is 70-100 beats per minute, and adult’s ideal pulse rate is 60-100 beats per minute.

What is normal blood pressure by age?

Ideal blood pressure is 120/80 mmHg.
Blood pressure doesn’t change with age, but blood pressure of infant and elderly people is slightly different.

What can cause an abnormal pulse oximetry reading?

Blood pressure generally needs to be >80 SBP.
Vascular impingement from any cause.
AV fistula can decrease distal flow.
Elevation with respect to the heart.
Compression by the probe.
Cardiac arrest
Heart Rate extremes <30 or >200. Cold. Fear (Endogenous catecholamines) Medications.

Medical Disclaimer:This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Never disregard professional medical advice or delay in seeking it because of something you read in this article.

Disclosure: Some of the links in this article are affiliate links which means, at no additional cost to you, we will earn a commission if you click through and make a purchase.

Having a pulse oximeter is essential, and there are hundreds of pulse oximeters are on the market, yet the selection process depends on your purpose. Since you are investing a lot of money for buying a pulse oximeter, you are advised to pick the best pulse oximeter which fulfills your purpose.


  • Butterworth JF, Mackey DC, Wasnick JD. Noncardiovascular monitoring. In: Butterworth JF, Mackey DC, Wasnick JD, editors. Morgan and Mikhail’s clinical anesthesiology. 5. USA: The McGraw-Hill Companies; 2013. [Google Scholar]
  • Chan ED, Chan MM, Chan MM. Pulse oximetry: understanding its basic principles facilitates appreciation of its limitations. Respir Med. 2013;107:789–799. doi: 10.1016/j.rmed.2013.02.004. [PubMed] [CrossRef] [Google Scholar]
  • DeMeulenaere Susan. Pulse oximetry: uses and limitations. J Nurse Pract. 2007;3:312–317. doi: 10.1016/j.nurpra.2007.02.021. [CrossRef] [Google Scholar]
  • Mizukoshi K, Shibasaki M, Amaya F, Mizobe T, Tanaka Y. Which finger do you attach pulse oximetry to? Index finger or not? Eur J Anesthesiol. 2009;26(suppl 45):3AP1–3AP5. [Google Scholar]
We will be happy to hear your thoughts

Leave a reply