View the manual for the Polar M400 here, for free. This manual comes under the category sport watches and has been rated by 9 people with an average of a 8.1. This manual is available in the following languages: English. Do you have a question about the Polar M400 or do you need help? Ask your question here


The Polar M400 is a sport watch that offers a range of features for fitness enthusiasts. With a waterproof rating of up to 30 meters, it is suitable for swimming and other water-based activities. The clock mode can be set to either 12-hour or 24-hour format, and the watch boasts an accuracy of 15 seconds per month. The Polar M400 is equipped with a lithium polymer (LiPo) rechargeable battery, providing a battery life of approximately 8 hours. It also includes an alarm clock function and a backlight for enhanced visibility in low-light conditions. Users are alerted when the battery is running low, ensuring they are aware of the need for a recharge. One of the standout features of the Polar M400 is its ability to provide motivating feedback. It offers the functionality to transfer training data from the watch to a PC, allowing users to analyze their performance and progress. Additionally, it includes a fitness test feature, which provides valuable insights into one's overall fitness level. Overall, the Polar M400 is a reliable sport watch that offers a range of useful features for athletes and fitness enthusiasts. Its water resistance, accurate timekeeping, and motivating feedback make it a valuable tool for tracking and improving performance. With its durable construction and user-friendly design, the Polar M400 is a suitable choice for those looking for a versatile and functional sport watch.

| Brand | Polar |
| Model | M400 | 90051344 |
| Product | sport watch |
| EAN | 725882013411, 725882013428, 725882013893, 725882013923, 725882013954, 725882027708, 0725882013923 |
| Language | English |
| Filetype | User manual (PDF), Quickstart Guide (PDF) |
| Waterproof up to | 30 m |
| Protection features | Water resistant |
| Watch case material | Polymethyl methacrylate (PMMA), Silicone, Stainless steel, Thermoplastic urethane (TPU) |
| Market positioning | Sport watch |
| Product color | White |
| Clock mode | 12h/24h |
| Accuracy | 15 sec/month |
| Altimeter | Yes |
| Alarm clock | Yes |
| Motivating feedback | Yes |
| Sport watch to PC data transfer | Training data |
| Fitness test | Yes |
| Heart rate monitor | No |
| Built-in distance meter | Yes |
| Recommended activity | Fitness, Running |
| Battery technology | Lithium Polymer (LiPo) |
| Rechargeable battery | Yes |
| Battery life | 8 h |
| Battery type | Built-in battery |
| Backlight | Yes |
| Display resolution | 128 x 128 pixels |
| Battery low indication | Yes |
| Operating temperature (T-T) | -10 - 50 °C |
| GPS (satellite) | Yes |
| Bluetooth | Yes |
Can't find the answer to your question in the manual? You may find the answer to your question in the FAQs about the Polar M400 below.
It is sensible for you to switch off your sport watch at night, this ensures longer battery life.
No, no internet is required to receive GPS.
The abbreviation GPS stands for 'Global Positioning System'.
GPS is a system that can be used all over the globe to determine your location by means of satellites.
As an adult, it is recommended to do moderately intensive exercise for at least 2.5 hours per week. Preferably spread over several days.
An adult's resting heart rate is between 60 and 100 beats per minute.
As a rule of thumb for your maximum heart rate, you can use 220 minus your age.
Bluetooth is a way of exchanging data wirelessly between electronic devices via radio waves. The distance between the two devices that exchange data can in most cases be no more than ten metres.
The screen resolution of the Polar M400 is 128 x 128 pixels.
To set up the date and time on your Polar M400, navigate to the "Settings" menu, then select "Date & Time." From there, you can adjust the date and time settings to match your preferences.
To track your heart rate with the Polar M400, make sure you have attached the heart rate sensor to your chest, ensuring good contact. Then, navigate to the "Training" menu, select "Heart rate," and choose "Start." Your watch will display your current heart rate and track it throughout your activity.
To customize sport profiles on your Polar M400, go to the "Settings" menu and select "Sport Profiles." From there, you can create and modify profiles for different activities such as running, cycling, or swimming, allowing you to tailor the watch data and features specific to each sport.
To view your GPS data on the Polar M400, go to the "Diary" menu and select any recorded activity. Once you open the activity, you can scroll through various screens to see information such as distance, pace, altitude, and a map of your route if GPS was enabled during the activity.
To set up interval training on your Polar M400, access the "Training" menu and select "Interval Timer." From there, you can create custom interval sessions by setting the duration of exercise and rest intervals, as well as the number of repetitions. Your watch will guide you through each interval during your workout.
Yes, the Polar M400 is waterproof up to 30 meters. This means that it can be submerged in water up to that depth without getting damaged, making it suitable for swimming and other water activities.
Yes, the Polar M400 has an altimeter, which means it can measure and display altitude. This can be useful for activities such as hiking or skiing, where knowing the elevation can be important.
Yes, the Polar M400 has a rechargeable battery. This means that you can easily charge it using a USB cable, eliminating the need for disposable batteries.
Yes, the Polar M400 has a backlight, allowing you to easily see the display in low light conditions. This can be particularly helpful when using the watch during early morning or evening workouts.
Yes, the Polar M400 has a fitness test feature, which allows you to assess your aerobic fitness level. This can be a useful tool for tracking your progress and setting realistic fitness goals.
Yes, the manual of the Polar M400 is available in English .
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Number of questions: 13I am having problems with the settings on my Polar M400 sport watch. I am sending a photo of how the screen looks, which does not change when pressing the buttons. Sometimes, three moving dots appear. Thank you in advance and I will be attentive to your comments.
My Polar M430 does not respond when I try to adjust the time and other functions. Three dots appear. Does this mean that the battery has reached the end of its life? Can the battery be replaced? Do I have to throw away the watch?
A question mark has appeared on my watch, in the upper left corner. I don't know how to get it off or why it's there. Do you know what it could be? Best regards, Anette Nesbø.
This message has been automatically translatedHello, I can't seem to charge my Polar M400 anymore. It just won't work. I have rinsed it off occasionally, which should prevent this problem. Right? Neither the power plug/USB nor laptop works. What could be the cause of this? Looking forward to hearing from you. Kind regards, Jeroen
This message has been automatically translatedMy watch can't find the heart rate monitor when I search for other devices??
This message has been automatically translatedMy Polar M400 is not charging anymore what to do?
This message has been automatically translatedHow do I change the name displayed on the watch?
This message has been automatically translatedhi there, I cannot get back to menu setting on watch. How can I find themenu function out so that I can set the watch.
Hi. Can you tell me how to use the back to start function on this watch please? Thanks in advance Paul
Beste, Ik heb ooit mijn M400 volledig ingesteld. Dus mijn naam staat op de display. Hoe krijg ik mijn naam er terug af ? Ben al naar instellingen gegaan maar vind nergens een aanwijzing om mijn naam eraf te krijgen . Mvg Greet Verlinden