Shows when you’re improving fitness based on your heart rate

Displays calories burned

Comes with comfortable fabric transmitter and coded heart rate transmission to avoid cross-talk

Suitable for swimming



  • FT4
  • FT4
  • FT4
  • FT4
  • FT4


  • Body measurement features
    • Manual target zone – bpm / %

      Manual target zone – bpm / %

      This feature enables you to define the target zone as you want and is suitable for your training. You can set the target zone for your training as beats per minute (bpm), as a percentage of your maximum heart rate, or as a percentage of your heart rate reserve (HRR%).

    • HRmax (user set)
    • Polar OwnCode® (5kHz) – coded transmission

      Polar OwnCode® (5kHz) – coded transmission

      Coded heart rate transmission automatically locks in a code to transmit your heart rate to the training computer. The training computer picks up your heart rate from your transmitter only. Coding prevents interference from other training computers.

    • Polar OwnCal ® - Smart calories

      Polar OwnCal ® - Smart calories

      The most accurate calorie counter on the market calculates the number of calories burned. Calculation is based on your individual data: your weight, height, age, gender and the intensity of physical activity. Smart Calories are available in heart rate monitors and activity trackers.

    • HR-based target zones with visual and audible alarm

      HR-based target zones with visual and audible alarm

      You can define your target zones for a training session based on heart rate to help define the right intensity. When you are out of the preset zones, the training computer will give a visual and audible alarm.

    • Average and maximum heart rate of training
    • Automatic age-based target zone – bpm / %

      Automatic age-based target zone – bpm / %

      To help you train safely and effectively, the training computer determines your heart rate target zone limits automatically according to your age-based maximum heart rate (220 minus age). The limits are determined either in beats per minute (bpm), as a percentage (%) of your maximum heart rate, or as a heart rate reserve (% HRR). See also Maximal oxygen uptake (VO2max) and Manual target zone.

    • Heart rate – bpm / %

      Heart rate – bpm / %

      Heart rate is the measurement of the work your heart does. Heart rate can be expressed as the number of beats per minute (bpm) or as a percentage (%) of your maximum heart rate.

  • Training features
    • HeartTouch – button-free operation of wrist unit

      HeartTouch – button-free operation of wrist unit

      When HeartTouch is on, different training information during training can be accessed without pressing buttons, for instance, when gloves make pressing buttons difficult, by bringing your training computer close to your transmitter.

    • Graphical target zone indicator

      Graphical target zone indicator

      This feature points out graphically on the display the zone you are in during a training session helping you to stay on the desired intensity zone.

    • ZonePointer
  • Recording features
    • Totals


      Totals includes your training data starting from the last reset enabling you to follow your long-term training.

    • Training files (with summaries) – 10
  • Watch features
    • Backlight
    • Date and weekday indicator
    • Display text in English, German, Finnish, Swedish, French, Portuguese, Spanish, and Italian
    • Dual time zone
    • Button lock

      Button lock

      By activating button lock, training computer buttons are locked, and accidental presses do not cause problems, for instance, during training.

    • Low battery indicator
    • Time of day (12/24h) with alarm and snooze
    • User replaceable battery
    • Water resistant – 30m

In the box


FT4 is rated 3.7083 out of 5 by 24.
Rated 2 out of 5 by from Used to love it When I first got my polar ft4 in March I loved it. It was comfortable and worked like a dream. Then in less than a month the strap battery ran out. I sent it in to be replaced and once I finally got it back it worked fine. Now I have a hard time getting it to continue tracking my heart rate. If I'm running it will work but if I bend over at all it will say check heart rate transmitter, which gets to be pretty annoying.
Date published: 2015-08-25
Rated 5 out of 5 by from my watch stopped working and died :( Yesterday I was wearing my clock and it was working normally, after a few minutes the watch turns off. I tried to replace the battery but it is in good condition. What problem may have the watch? I never have hit it. can anyone give me a clue please?
Date published: 2015-04-09
Rated 3 out of 5 by from Older models were better I am disappointed with the FT4. I purchased this 2.5 years ago, it was my second Polar. I love the simplicity of HR monitors and had great luck with my old Polar F4 for more than 4 years...unfortunately, when the old style chest strap ran out of battery, that was it, can't be replaced. I went with Polar again...the new chest strap design is bulky and doesn't work as well as the old one piece. Also, the past 1.5 years the FT4 has given me lots of trouble with transmission (I've tried everything) and batteries (both in the chest strap and watch) need more frequent replacement (less than a year). I wish it would work properly and I really do keep having hope. But I am about to give up, as I am taking on regular running again and need a reliable unit. I don't know if I will try Polar again...the 2 piece chest strap sucks. Bring back the old style, please!
Date published: 2015-03-21
Rated 5 out of 5 by from I will not workout with out my watch...I love it...It motivates me to push harder.....
Date published: 2015-03-06
Rated 5 out of 5 by from Awesome value! The FT4 is one of the most popular Polar watches out there. It's affordable, simple to use, and has all the features you need and none you don't. The quintessential entry-level heart rate monitor.
Date published: 2015-01-29
Rated 1 out of 5 by from Broken - again This is the second Polar FT4 I have bought and both have broken. I replaced the battery each time (yes, correct battery) and it still will not read my heart rate. I thought it was a fluke the first time so bought another. Mistake. It did the same thing within 6 months. What a waste of money.
Date published: 2015-01-26
Rated 5 out of 5 by from Love it! Bought this as a birthday gift to myself and am thrilled with the product. It's comfy and I have worn the belt and watch all day on several occasions to calculate my RMR and how many calories burned while resting. This is priceless info when calculating my caloric and macro intake. :)
Date published: 2015-01-16
Rated 1 out of 5 by from Older Models Were Better I received this as a gift a year ago. My preferred exercise is lap swimming and though the device clearly says that it is "suitable for swimming" it will not work. I tried using electrode creams and other things but it would not work at all. I had a lot of issues with the product and support sent me generic list of thing to try (use the transmitter upside down, use electrode cream, etc). My previous FT6 (purchased 4 years ago) worked great for all activities (without fuss or electrode cream) and the battery lasted a long time. I had to replace the battery on the FT6 after about 4 months. I lost the chest transmitter piece a couple of months ago. I'm going to buy the HT7 so I can use the transmitter with a phone or the FT4 and hopefully have better luck. Do not buy this item. Perhaps other Polar watches work better, this is a waste of money.
Date published: 2015-01-03
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