Polar Grit X2 Pro Titan

Polar Grit X2 Pro Titan is a rough and rugged outdoor sports watch crafted for adventure with sapphire glass AMOLED display in titanium casing, and a hi-tech toolkit of navigation and performance features for exploring the wonders of the world, and the body.

Polar Grit X2 Pro

Polar Grit X2 Pro is a rough and rugged outdoor sports watch crafted for adventure with sapphire crystal glass AMOLED display, and a hi-tech toolkit of navigation and performance features for exploring the wonders of the world, and the body.

Polar Vantage V3

An ensemble of biosensing instruments, AMOLED display, dual-frequency GPS, maps, and the most comprehensive suite of training and recovery tools on the market. The stage is set, and the Polar Vantage V3 smart sports watch is ready to put in the performance of a lifetime.

Polar Ignite 3

Polar Ignite 3 is a stylish fitness & wellness watch that helps you live a more energized life. It tracks your sleep, activity, and heart rate to provide guidance that’s tailored to your body and lifestyle.

Polar Pacer Pro

Polar Pacer Pro is an ultra-light, new-generation sports watch with integrated barometer that equips athletes with advanced tools to improve running economy, training sessions, and sports performance.

Polar Pacer

Sport is play – why complicate it? Polar Pacer is a no-nonsense sports watch that gives new athletes all the essentials, plus the specialized training tools they need to train better.

Polar Vantage V2

A powerful convergence of minimalist design, innovative technology, and intelligent training and recovery tools make Polar Vantage V2 our most formidable sportswatch to date.

Polar Grit X Pro

Built for military-level durability with sapphire glass and ultra-long battery, equipping you with new navigation tools, always-on outdoor features and Polar's ultimate training solutions.

Polar Vantage M2

Designed for function, the Polar Vantage M2 works as hard as you do. Our industry-leading technology is here to help you reach your goals and come back stronger. For that athlete attitude.

Polar Ignite 2

A fitness watch that’s sleek, simple and smart? Polar Ignite 2 is a true triple threat. Versatile and full of great features, it’s the perfect companion for any sport and any lifestyle.

Polar Ignite

A waterproof fitness watch with advanced wrist-based heart rate and integrated GPS, Polar Ignite offers you a full view of your day and guides you towards a more balanced life.

Polar Unite

A beautifully simple watch with personalized daily workout guidance, 24/7 heart rate and activity tracking, plus automatic sleep and recovery applications.

Polar Vantage M

An all-round multisport & running GPS watch for anyone who loves setting new records. Polar Vantage M is a slim, lightweight training companion that gives you all the data you need to improve your performance.

Polar Grit X

An outdoor multisport watch with rugged yet lightweight design, ultra-long battery life and military-standard durability for anyone who prefers the trails over the roads.

Polar M430

A GPS running watch with wrist-based heart rate, advanced running features and Polar Running Program, Polar M430 is a top-level watch for runners who want more.

Polar Verity Sense

When freedom of movement is important to you, Polar Verity Sense is your go-to choice for any sport.

Polar H10

Widely regarded as the gold standard in wireless heart rate monitoring, this is the most accurate sensor in Polar’s history.

Polar H9

A reliable, high-quality heart rate chest strap for all your everyday sports with Bluetooth® and ANT+ connectivity. Get connected and get going.

Polar OH1+

Polar OH1 is an optical heart rate monitor that combines versatility, comfort and simplicity. You can use it both as a standalone device and pair it with various fitness apps, sports watches and smart watches, thanks to Bluetooth® and ANT+ connectivity.


Personalize any watch for any style and any need.


Replace or upgrade your Polar Sensor chest straps or arm bands.

Power & Cables

For charging your products and data transfer.

Mounts & Adapters

Adapt your product for any situation.





Polar Grit X Outdoor Series

Made for outdoor sports and built to handle any environment nature can throw at you, Grit X watches are designed to help you explore the world and gear up for adventure.

Polar Vantage Performance Series

Our flagship series is tailored for high-performance and endurance sports and training. Every aspect of our Vantage watches are designed with one particular person in mind – the athlete.

Polar Pacer Multisport Series

The Pacer Series gives athletes all the essentials such as accurate GPS and precise heart rate tracking, plus the specialized training, sleep, and recovery tools they need to train better.

Polar Ignite Fitness & Wellness Series

Sleek, simple, and smart – Ignite watches are the perfect partner for any fitness goals and any lifestyle.

Blood oxygen level (SpO2)

Polar SpO2 estimates the amount of oxygen you have circulating in your blood using pulse oximetry technology.

What is a normal blood oxygen?

Blood oxygen, also known as oxygen saturation or SpO2, refers to the amount of oxygen carried by red blood cells in the bloodstream. Understanding your blood oxygen levels is a key indicator of wellness: changes to your baseline measurements can indicate shifts in your health and wellbeing.

For fitness purposes, blood oxygen readings can help you assess your body’s response to exercise over time. When hiking or training at altitude, oxygen saturation can also serve as a useful sign of your acclimatization to the environment.

What is a normal blood oxygen level?

Typically, most healthy people maintain a blood oxygen level within the range of 95 to 100%. Some people, however, live a a normal life with levels below 95%.

During sleep, slightly lower values are considered normal. Your blood oxygen levels may also be lower if you live at high altitude. Your healthcare provider will tell you what levels are acceptable for you.

Blood oxygen level chart

SpO2 values usually vary between 90 and 100%.

- Normal: 95-100%
- Below normal: 90-94%. Your blood oxygen level is lower than normal. Environmental factors such as altitude or physical conditions like asthma can cause lower SpO2 levels.
- Low: Less than 90%. If your blood oxygen level is low, you may experience more severe symptoms like shortness of breath and elevated heart rate. In this case, you should contact your doctor or healthcare professional.

Blood oxygen saturation

Check your blood oxygen level with Polar SpO2

Powered by Elixir™ biosensing technologies, Polar SpO2 uses pulse oximetry technology to estimate the amount of oxygen you have circulating in your blood. It emits two different wavelengths of light, red and infrared, through the skin and into the underlying blood vessels. Inside the blood vessels, the light interacts with the oxygenated and deoxygenated hemoglobin in the red blood cells. The amounts of reflected and backscattered light are used to calculate how much oxygen your blood is carrying.

All blood oxygen measurements are saved to Polar Flow along with altitude information. Use this information to track and analyze your body’s response to exercise over a period of time.

Important: The SpO2 measurement feature is not intended for any medical use, diagnosis, or treatment as such (including self-diagnosis or consultation with a doctor) and the data should not be used for any medical purpose.

SpO2 and training at altitude

At higher altitudes, the air contains fewer oxygen molecules, making it challenging for your body to transfer oxygen into your blood, resulting in increased fatigue and lower SpO2 levels. Reduced oxygen levels force your body to work harder.

When training at different altitudes, understanding your blood oxygen saturation can help you assess your exertion level and avoid overtraining.

As your body adapts to a higher altitude, you'll experience increasing oxygen saturation levels.

White paper

The science behind the SpO2 sensor

Polar SpO2 is based on pulse oximetry technology, a scientifically proven method for estimating blood oxygen saturation measurements. Its results are comparable to direct arterial blood oxygen saturation measurements.

Compatible products

Optical Heart Rate

OHR enables heart rate monitoring from the wrist, providing real-time data, and insight on the heart's activity during sports, sleep, and everything between.

Blood Oxygen Level

SpO2 is a non-invasive measurement of the oxygen saturation in red blood cells to indicate the effectiveness of the body’s ability to transport oxygen. It’s especially useful for high-intensity–or high-altitude–workouts.

Skin Temperature

Nightly skin temperature monitors fluctuations in core body temperature during sleep to provide insights on thermoregulation and sleep quality.


Electrocardiogram monitoring from the wrist provides valuable insights into the heart's electrical activity and rhythm for a better understanding of cardiovascular health and performance.


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