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.

Running Power

With Grit X/Grit X Pro/Grit X2 Pro/Pacer Pro/Vantage V/Vantage V2/Vantage V3 running power from the wrist is calculated without any external sensors. With Pacer/Vantage M/Vantage M2 an external power sensor is required to measure running power.

What is running power?

Running power in the simplest sense is a mechanical work rate, measured in watts. Normally, we do mechanical work when we lift objects or climb stairs. In both cases, we do work against gravity. In running, we do work against gravity and friction as well. The faster we work the higher the power.

There is no universally accepted definition for running power. However, to validate our solution, we have used the following definition: Running power is a positive change in mechanical energy of the center of mass over one step cycle divided by step cycle time, where mechanical energy is the sum of kinetic and gravitational potential energy. By validation, we have not only confirmed that our power is accurate, but we have also ensured that repeated workouts produce consistent results (repeatability) and power responds rapidly to changes in intensity (responsiveness).

How is running power from the wrist calculated with Grit X/Grit X Pro/Grit X2 Pro/Pacer Pro/Vantage V/Vantage V2/Vantage V3?
Polar running power from the wrist uses the information of speed and gradient obtained from GPS and barometric sensors. Final power is calibrated in a laboratory using force plates. Your weight also affects the calculation, so make sure its up-to-date.

The main difference compared to foot pod power sensors is that Polar Running Power from the wrist does not require any additional sensors.

Benefits of training with running power
Running power responds to increase in intensity almost instantaneously, has a high dynamic range, and takes into account changes in altitude. Thus it’s well-suited for interval training and running in hilly terrain.

Due to a high dynamic range, running power measures both aerobic and anaerobic power. This is useful in training as a runner can stay informed when maximal aerobic power (MAP) has been exceeded. Training at power that is greater than MAP (power zones 4–5) is essential in developing big and strong muscles capable of supplying a lot of work in a short period of time. Furthermore, running power helps to train progressively, yet safely, through a new parameter called Muscle Load.

Running power and muscle load
Polar uses running power to calculate Muscle Load, one parameter of Training Load Pro. Running causes musculoskeletal stress, and Muscle Load tells you how much your muscles and joints were strained during your training session. It shows the amount of mechanical work (kJ) that you produced during your running sessions (and cycling sessions if you’re using a cycling power meter). Muscle Load helps you quantify your training load in high-intensity running training sessions, such as short intervals, sprints and hill sessions, when your heart rate doesn’t have enough time to react to the changes in the intensity.

How running power is shown on your watch
Choose the power data you want to view during your sessions by customizing your training views in the Flow web service sport profile settings.

During your run you can view the following data:

  • Maximum power
  • Average power
  • Lap power
  • Maximum lap power
  • Automatic lap power average
  • Automatic lap power maximum

Choose how power is shown during sessions and in the Flow web service and app:

  • Watts W
  • Watts per kilogram W/kg
  • Percentage of MAP (% of MAP)

After your session in the training summary on your watch you’ll see:

  • Your average power as Watts
  • Your maximum power as Watts
  • Muscle Load
  • Time spent in power zones

How running power is shown in the Polar web service and app
Detailed graphs for analysis are available in the Flow web service and app. See your power values from your session, and how they were distributed compared to heart rate, and how incline, decline and different speeds affected them.

Further reading


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