The 11 Best Pulse Oximeters for 2025 – Top Picks & Buying Guide

Unless you are an expert on the subject, the expression “wrist oximeter” will seem Arabic to you. In contrast, the words “oximeter” and “pulse oximeter” will probably be more familiar to you. It is a medical device that, in its most popular version, is placed on the finger to measure the circulation of oxygen in the blood.

The oximeter in recent years has become a very popular tool among sportsmen, thanks to the possibility of improving its performance. Its use is recommended during workouts that test lung capacity.

Right here we had listed out the best pulse oximeters that are listed below.

Everything You Need to Know About a Best Pulse Oximeter

If you got here, it’s because you have a clear goal! You probably want to recover a good level of training to improve your physical condition, or maybe you often walk in the mountains, and you need to keep your health under control.

Either way, you need an oximeter. In the next sections, we will provide you with all the necessary information and help you clarify your doubts.

What Exactly Is an Oximeter?

An oximeter is a small device that measures the level of oxygen saturation in the blood. It has the shape of a plier and can be placed on the finger. It is composed of a light that detects the color of the blood and a sensor that sends the information.

Blood takes on a darker red color when it releases oxygen – although it looks blue when it flows through the veins – and turns bright red when there is a lot of oxygen.

Sports pulse oximeters can also include other features, such as checking heart rate, measuring breathing rate, and perfusion index (arterial pulse) or even hydration status. This versatility makes it a very precious ally for sportsmen and mountain lovers.

What Is the Oxygen Saturation that Measures the Oximeter?

Oxygen saturation (SpO2) corresponds to the amount of oxygen detected in the blood. To understand this, according to the World Health Organization (WHO), the reference levels for a healthy person are between 95 and 100%.

However, it is good to know that during intense training, session levels can drop frequently.

How Do You Interpret the Results of The Oximeter?

First of all, you will have to read the numbers that will appear on the screen (depending on the brand and model of the oximeter, it can take between 5 and 10 seconds).

The abbreviation SpO2 (oxygen saturation by pulse oximetry) will provide you with a value that we recommend you to write down so that you can keep track of your performances. Don’t forget to write down the date too.

Should the Oximeter Be Used After Exercising?

The use of the oximeter is strongly recommended for athletes who systematically practice intense or altitude physical activity, given their constant need for adequate oxygen levels.

If your oxygen level during exercise is lower than the resting oxygen level, with a difference greater than 4%, it could be an incorrect reading. In any case, we advise you to consult your doctor.

When Should You Worry About the Results of The Oximeter?

According to the World Health Organization (WHO), the optimal blood oxygen levels are equal to or greater than 95%. A value of 92% or less is considered hypoxemia (insufficient blood oxygen level).

Which could cause breathing difficulties, headaches, confusional states, and agitation? It could even be an emergency!

Hypoxia is the trigger for Acute Mountain Evil (MAM), which can cause dizziness, headache, nausea, vomiting, lack of appetite, physical fatigue, sleep disturbances, and even cerebral and pulmonary edema. These symptoms can manifest themselves in a mild, moderate, or acute form.

What Is the Function of The Oximeter in Resistance Training?

The oximeter is a very useful tool to improve performance in your workouts. The recovery phase, which is as important as the active phase of the session, is measured with the pulse oximeter. Proper recovery will allow us to improve our physical condition.

Also, the oximeter is essential for sportsmen who train at high altitudes. It is precisely in this type of training that a lot of attention must be paid, given that the decrease in atmospheric pressure lowers our oxygen levels to constitute a health risk.

Altitude directly affects our performance, since higher altitudes correspond to less oxygen. In these cases, our body responds by increasing the respiratory rate and blood to carry more oxygen, mechanisms that can cause the appearance of fatigue and dizziness.

When the saturation level falls below 90%, it is hypoxia, which, in the most serious cases, can even cause death.

How Do I Use the Oximeter Correctly?

Pulse oximetry is a non-invasive method that allows you to measure oxygen in the blood (SpO2) in a very simple way. However, some steps are necessary to ensure that the measurement is correct and accurate since the detection of values ​​lower than the reference values ​​can be vital.

• Before You Start, you need to clean the sensor with cotton or something similar.
• Before Placing the Oximeter on Your Finger, remember that you must have your nails clean, without traces or parts of nail polish in order not to distort the measurement. You don’t have to move.
• Do Not Expose the Oximeter to Light, natural or artificial, just before reading the result.
• Make Sure You Don’t Have Too Cold Hands. in This Case, rub them to more appropriate body temperature.
• Position the Appliance on The Finger at the height of the nail.
• Wait a Few Seconds until you get the oxygen saturation reading.

How Much Does a Finger Oximeter Cost?

There is a large variety of finger pulse oximeters on the market. The cheapest models can be found starting from around 20 euros. However, it must be considered that this type of low-cost equipment can lose calibration more quickly.

Better quality pulse oximeters, which incorporate more features and have a longer lifespan, can cost around 50 euros.

Purchase Criteria

We have already collected a lot of information about the oximeters, and now the last step is missing! In fact, before choosing a pulse oximeter, you will need to consider several fundamental factors. Let’s see what these parameters are to be analyzed to make sure you buy a product that is of good quality, and that suits your needs.

• Dimensions
• Precision
• Battery
• Screen and Data Reading
• Warning Function
• After-Sales Service

Dimensions

This category of products can have variable dimensions depending on the model. Finger pulse oximeters are pocket devices that rarely exceed 70 g in weight.

Still, we advise you to make sure that your purchase is suitable for the use you want to do: check if the pulse oximeter is suitable only for adults or even for children.

Precision

Nowadays, practically all pulse oximeters available on the market contain the latest technologies. However, some offer additional features, such as a notification system that warns if detection cannot be done correctly.

We advise you to opt for products that offer this versatility. In this way, you can be sure of the truthfulness of the results obtained.

Battery

You will have to consider the type of use you want to make of the instrument; in fact, it will not be the same to measure saturation after any training or during a mountain expedition.

In this sense, you have to think if you prefer a device with batteries or a battery. How long can the pulse oximeter not be charged? These are questions you need to ask to decide which of the two options is best suited to your needs.

Screen and Data Reading

We remind you to look for an oximeter with a large screen, which guarantees easy reading. In some models, it is possible to save the data of the previous readings, to generate comparative screens, and keep tracking.

We advise you not to look for a model that is too sophisticated if you think that these features do not serve you and can create confusion. You can always record the results in a notebook and keep a manual tracking!

Warning Function

Some models notify, with an audible warning, when they detect low saturation levels. In such a case, you should consult your doctor, who will assess the situation and prescribe any treatment. The simplest oximeters do not have this function, which is more common in products at a higher price.

After-Sales Service

Typically these devices need to be checked and recalibrated approximately every two years. For this reason, we advise you to consider pulse oximeters from manufacturers that offer this service. Also, it is a good idea to check whether any recognized institution certifies the instrument.