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.

Nightly skin temperature

The Nightly Skin Temperature measurement automatically tracks your skin temperature when you sleep. It then compares the result with your 28-day average, and shows the variation to that average. Tracking the variations in your skin temperature can help you detect changes in your body's state.

In contrast to core body temperature, which is usually quite stable around +37 degrees Celsius (98.6 °F), the temperature of your skin can vary much more. This is because the body regulates its core temperature through changing the blood flow of the skin. Also, environmental factors affect the skin temperature. A variation of +-1 degrees Celsius / +-1.8 degrees Fahrenheit is considered usual in skin temperature. Lower temperatures can occur quite often due to environmental factors, such as colder room temperature or sleeping with your hand outside the covers. Higher temperatures might be a sign of oncoming illness. Higher temperatures can also indicate being in the latter part of the menstrual cycle (ovulation and luteal phase).

The skin temperature feature can't be used as a thermometer, as it doesn't show any absolute temperature values, only the variation to your average skin temperature. If you're feeling under the weather, double-check your temperature with a thermometer.

The temperature measurement feature and data is not intended for medical purposes, diagnosis or treatment.

  1. Continuous heart rate tracking needs to be enabled for Nightly skin temperature measurement to function. To enable Continuous HR tracking go to Settings > General Settings > Continuous HR tracking and choose On or Night-time only.
  2. Tighten the wristband firmly around your wrist and wear the watch when you sleep. For detailed wearing instructions, see Wrist-based heart rate measurement.
  3. You need to wear your watch for three nights before you start to see your Nightly skin temperature results on your watch. After three nights, we know your average skin temperature and show it as baseline (zero). When calculating the baseline, the past 28 nights are taken into account.

Sync your watch with the Polar Flow app to see your skin temperature data in the app. Note that you must sync your watch using the Flow app. Skin temperature data cannot be synced using the Polar FlowSync software on your computer.

In the Polar Flow app, choose Skin temperature from the menu (1). From the Skin temperature view (2), you can check the result of last night's measurement and also see how your skin temperature varies over the course of a week or month. You can also check the result of last night's measurement from the card in the Diary (3). Tapping the card opens the Skin temperature view.


When your watch detects that you have woken up, it compares the skin temperature measured during sleep to your average skin temperature, and shows the variation to that average. Navigate to the Nightly skin temperature view by swiping left or right from the watch face.

You can also stop the sleep tracking manually if you watch has not yet summarized your sleep. Zzz... is shown on the Nightly skin temperature view when your watch has detected a minimum of four hours of sleep. Already awake? appears when you tap the display. Confirm by tapping and the watch summarizes your sleep instantly. If sleep isn't recognized, skin temperature won't be available.

The information displayed on the Nightly skin temperature view includes:

  1. Variation to your average skin temperature.
  2. Your skin temperature compared to usual level. Scale: Below usualUsual Above usualMuch above usual.

    Variation within +-1 degrees Celsius or +-1.8 degrees Fahrenheit is considered Usual. If the variation to your average skin temperature is more than +2 degrees Celsius or +3.6 degrees Fahrenheit, it is considered Much above usual.
  3. A graph showing your skin temperature measurements from the last 7 nights.

Further reading


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