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.

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Wristbands

Personalize any watch for any style and any need.

Straps

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.

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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.

How do I change the battery to my heart rate sensor?

To ensure normal operation and performance of the sensor, use only CR2025 battery.

Keep new and used batteries away from children.

You can change the heart rate sensor battery yourself. To change the battery, follow the instructions below.

1. Lever the battery cover open by using the clip on the strap.

2. Remove the old battery from the battery cover.

3. Insert the new battery CR2025 inside the cover with the positive (+) side downwards.

4. Make sure the red sealing ring is in place, clean and intact. If the sealing ring is damaged, replace it with a new one*.

5. Put the battery cover back in place. First align the ledge on the battery cover with the slot on the connector, hold the ledge in place with your finger and then press the other side of the battery cover back into place. You should hear a snap. Ensure that the battery cover is properly closed to keep the sealing ring in place and to maintain the sensor’s waterproofness.

Sensor pairing with a Polar or third-party device or app is required after a battery replacement if you are using a firmware version earlier than 3.3.1 for H10 and 1.2.1 for H9.

* Replacement sealing rings can be purchased at Polar Service Centers. Check out the Service Center locations from the Service page.

See also the instruction video.

If the battery drains quickly

You can check the average battery lifetime of your heart rate sensor from the sensor user manual at support.polar.com/en. If the battery seems to drain quickly:

  • Make sure you detach the connector from the strap after training and store them separately.
  • Make sure the strap and the connector are clean and intact. Get familiar with the detailed care and maintenance instructions.
  • If the battery appears to drain quickly, consider trying a battery from a different manufacturer, as battery quality can vary among different brands. We recommend using batteries from reputable brands, such as Panasonic and Maxell, as their operational quality has proven to be reliable with Polar heart rate sensors.
  • By default, H10/H9 sends heart rate signal via Bluetooth, ANT+ and GymLink. Turn off unnecessary connections from the sensor settings in Polar Flow or Beat app to extend battery life.

How do I know that the battery of my heart rate sensor needs to be changed?

Your heart rate sensor battery may need replacing if your training device or app does not show heart rate reading or if the heart rate reading is abnormal or stays unchanged for a long time. Abnormal heart rate readings may also be due to some other reasons than drained battery. See Abnormal heart rate readings during the exercise for more information.

If you have paired your H10/H9 with the Polar Flow or Beat app, you can check the the battery level status of the sensor from the app. See How to check the battery level status of my heart rate sensor? for instructions.

Further reading

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