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 3 out of 5 by from Good basic tracker I've had this for almost 2 years and it's served me well. The basic Heart rate monitoring and calorie tracking work great, and the strap fits well. I did find it comes undone occasionally while running if I haven't been careful while putting it on, and it may need to put on one way up for best grip. I'm finding that it is developing a sharp spot on the plastic connector just recently. My biggest dissappointment is in the WebSync - FT4 doesn't come with an uploading connector. Also, the free App you can get doesn't work on any of my Android devices. So I am stuck with the watch only, and no further info from uploading the data to my computer.
Date published: 2014-09-05
Rated 5 out of 5 by from Update Review I bought my polar a little over 3 months ago and I love it. I started my weight loss journey back in September 2013 but the second picture is when I started using the Polar for feedback. I love it. Instant gratification. It lets me know when I need to pick up the pace. Even when I need to take in down a notch. I have a long way to go, but polar is an investment in my healthier lifestyle.
Date published: 2014-05-31
Rated 2 out of 5 by from Accurate but complaint about heart rate band I was given this item as a gift, less than a year ago. I use it quite often, however the band has left me several different scars, located where the heart rate monitor band lies across my chest. I love the product, but I've been forced to use it less often as it leaves me a new cut if used every day. Also, the band has fastener that allows for shortening and lengthening itself based on your size- if you're small it is difficult to wear as even the most fastened option is too big for myself and tends to slowly fall during exercise. I do like the product and the quality. I've avidly used it for my workouts since I received it, but the band is my only complaint. Is there perhaps another model you would recommend for me? Do you allow for trade ins if unhappy with a product?
Date published: 2014-10-10
Rated 5 out of 5 by from Basic Accuracy This "watch" is designed to give you an accurate calorie burn count based on your info and your actual heart rate. It does just that. I have used the FT4 for 2+ years. I've changed the battery one time because I bought it on clearance at a local store. It clearly shows me my HR or if you want to see how many calories are burned, it will display that. Just scroll the buttons to see time, HR, calories, etc. Yes, it is BASIC, but that's what I wanted when I started getting fit. I'm probably going "trade up" to a more advanced model. But then again... Maybe not because I am so used to using this and hate to workout or run without it! Bottom line: it does what is says it will do.
Date published: 2014-09-02
Rated 5 out of 5 by from Easy to use and access the features. I bought this 2 months ago to monitor my heart rate and caloric burn during power vinyasa yoga practice. Wow, I knew I could burn a lot of calories in Jazzercise but I had no idea how much I had been burning in yoga practice. Next was to check out how many calories I burn while down hill skiing. Another, WOW! I love my Polar-FT4
Date published: 2014-02-13
Rated 5 out of 5 by from Good value for the money I purchased this watch 3.5 months ago and I love it. I am finishing up week 9 of P90X and it is holding up fine. I wash the band once a week in the washing machine. I like to keep track of my heart rate as well as the calories burned during my workout. I am excited because I just learned it can be used for swimming. I will start using it for that when our pool opens. I do agree with other reviews that a stretchy wrist band would be a nice improvement.
Date published: 2014-04-09
Rated 5 out of 5 by from AWESOME!!! I bought this because I needed feedback. I've been doing Weight Watchers for almost 6 months, and was looking for something to kick it up into high gear. I saw that some of my friends were using this, but I was paranoid that the chest strap wouldn't fit, so much that I almost got the men's one to make sure. It fits great, I actually had to make it tighter. It's a great tool to provide feedback, and make you work harder!!!
Date published: 2014-03-11
Rated 5 out of 5 by from Keeps you motivated! I love this product! I use it for crossfit and despite the high impact activity, I never felt like the chest strap was gonna come undone; although, I wish the watch had an option for a stretchy band cuz I wear wrist wraps when lifting weights, and the watch is too small to wrap around at that point. Otherwise, this keeps me in check with exertion and effort, and I love seeing how much I burn during an hour of crossfit!
Date published: 2014-03-15
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