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The Best Heart Rate Monitor for Swimming

Swimming is one of the best ways to work out and burn calories.

If you are an avid swimmer, a heart rate monitor is definitely something you should look into. We will be looking into three choices, that may be some of the best models for swimming.

What to look for in a heart rate monitor for swimming

Before you make a final decision on a purchase, you have to know what to look for in a monitor. The main reason for this is because they are financial investments; they range in price from under $50, to well over $200, so you want to take the time to determine what makes a great one. The first thing to do is to answer these questions: What am I willing to spend? How deep will I be swimming? How long do I need to swim for (the battery to last)? How often will I be using it? By answering these questions, you will be set to make a purchase in no time, without wasting it by looking at products that aren’t good for you.

The most important thing to look for is a heart rate monitor that is known for its accuracy.


There are a lot of knockoff brands, usually found in the $20-$30 zone, that simply are not accurate enough. If you are not getting accurate information, how are you supposed to keep track of your goals and accomplishments? This can throw off your entire swimming period and give you faulty data. Find one that is known for being accurate and from a reliable source.

Next, if you want one of the best for swimming, purchase a heart rate monitor intended for swimming. Obviously, it must be waterproof, not water resistant—that is not good enough. Chances are you are going to be fully submerged for most of the time, and your monitor needs to stay in good working condition the whole time. Having a heart monitor watch that is tailored for swimming, makes it the best.

These watches have the ability to feel what stroke you are doing, can let you know how many laps you have done, the speed of all of those laps, and how many strokes you do per minute. This allows you to do interval training and also train for something bigger. It gives you high-quality results that you can upload to your smartphone and plan strategic goals that will make you a stronger swimmer.

Lastly, the design of the heart rate monitor is very important. You need one that is very lightweight and compact. You can’t handle a bulky one while swimming as it will slow you down. As well, it needs to be bright enough on the display to see if you are training in a dimmed pool or at nighttime outside. By following all of these options above, you are guaranteed to purchase an exceptional heart rate monitor for swimming.

Below we have listed three products that are some of the best heart rate monitors for swimming. They come from three distinct brands that are known to be reliable and that we trust. They range in features and price, so you can see what one will best suit you.

Fitbit Flex 2

The first product up for review is the Fitbit Flex 2, the most famous brand on our list today, leading the entire market.


  • Able to track steps, distance ran, calories burned
  • Comes with both big or small band
  • Very thin
  • Fully swim proof and can track swimming
  • Life-proof wear for swimming in the ocean, lake, pool
  • Tracks your sleeping patterns


  • Reliable brand
  • Great look
  • Easy to Use
  • Fully waterproof
  • So many additional features
  • Lightweight


Battery life could be stronger

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TomTom Spark Cardio + Music, GPS Fitness Watch

The second product up for review is the TomTom Spark Cardio + Music, GPS Fitness Watch. It comes in a sky captain/scuba blue color for a sleek look to enhance your swimming needs.


  • Equipped with a Bluetooth music player, to enhance your swimming experience
  • Can wirelessly connect to songs on your smartphone without having it in the water
  • Songs can be trained to the beat of your heart
  • Fully waterproof
  • Sport watch—can be used multisport whether you want to use it to run, bike, gym, on the treadmill, or swim
  • GPS enabled to track the distances you run or swim
  • Able to test your speed, pace, calories being burned
  • Also is a sleep watch to monitor your sleeping patterns
  • Gives your live stats while being mobile
  • Audio enabled to give feedback on your performance
  • Battery lasts a long time—up to 3 weeks
  • With GPS enabled, can last up to 11 hours on single charge


  • Has everything you need
  • Multi-sport capable
  • Great look
  • Waterproof
  • GPS enabled
  • Battery lasts a long time
  • Comes with a music player


The strap is not strong enough, tends to break

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Garmin vívoactive HR GPS Smart Watch

The final product up for review is the Garmin vívoactive HR GPS Smart Watch. Garmin is another large company responsible for making high-quality heart rate monitors and GPS devices.


  • Fits a wrist that measures 137mm to 195mm, tending to be a regular fit
  • High-resolution touchscreen, great colors
  • GPS enabled
  • Can test heart rate all day and all night
  • Sends smart notifications straight to your phone
  • Waterproof for swimming
  • Cannot monitor heart rate while swimming
  • Built in sports apps for running, cycling, and many more sports


  • A lot of features
  • Touch screen
  • Great look
  • Easy to use


Not great for swimming, no heart rate monitoring under water


All three of the options above give you various features when it comes to endurance. However, the best heart rate monitor for swimming is the Fitbit Flex 2, as it is perfect for swimming in various settings.