Garmin Fenix 3 HR vs 735XT – Which One Is Better?


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Garmin watches are of world-class quality when it comes to the category of fitness smartwatches.

Two of their most popular ranges are the Fenix series and the Forerunner series.

Both of these two series have been widely successful in the market with their innovative and high-tech models.

Two of the most significant models out of these series are the Fenix 3 HR and the Forerunner 735XT.

Due to their extensive features, you might get confused about which one to choose from.

To solve this debate of Garmin Fenix 3 HR and 735XT, we have conducted a thorough analysis of their attributes and characteristics.

In this article, you will find their reviews along with the pros and cons. You will also get to know their differences. So, keep reading!

Garmin Fenix 3 HR vs 735XT Compariosn

Garmin Fenix 3 HR

Garmin Fenix 3 HR

If you are a fitness freak and would love a watch that will precisely keep track of all your outdoor activities, then the Garmin Fenix 3 HR watch is perfect for you.

The watch combines advanced GPS technology, smartwatch capabilities, heart rate monitor, and activity tracking abilities.

Its sleek and rugged design makes it a timepiece worth everyone’s envy. Using its advanced GPS technology supported by GLONASS, this watch can accurately track your position and help you navigate absolute precision.

Also, it can calculate the distance you have covered and the number of steps you have taken in your day-to-day activities.

Not only this, if you love to exercise, the watch can also serve as a fitness guide as well.

It is capable of calculating the calories you have burned and even monitor your heart rate simultaneously.

To track your heart rate, you won’t need a chest strap. Instead, it makes use of an elevate wrist heart technology to monitor your pulse.

And if you are worried about your daily activity and sleep rate ratio, then stay relaxed.

This watch also contains a sensor monitor that tracks your steps throughout the day and calculates your inactivity period when you are asleep.

On top of this, if you set a goal based on your activity target, this watch will alert you to meet it if you are behind on it.


  • Crystal lens display that can be read in the sunlight
  • 1.2-inch Chroma color screen
  • Elevate wrist technology is used to monitor heart rate
  • Bluetooth connectivity with smartphone
  • Can track your daily activities and sleep cycle


  • The altimeter sometimes gives inaccurate readings
  • A bit heavy

Garmin Forerunner 735XT

Garmin Forerunner 735XT

Otherwise known as the Forerunner 735XT, this watch features advanced GPS technology along with multisport attributes that make it a great fitness coach for fitness lovers.

If you want to monitor your pulse during a marathon or a race, it can be quickly done using its heart rate wrist monitor. This monitor is also shock resistant, which makes its readings more accurate.

Battery life is a crucial facet to look at while examining the attributes of a smartwatch.

The one is, this watch can function up to 11 days when it’s on the smartwatch mode. If you put it on the GPS mode, it can go on till 14 hours on a full charge.

It also features an Ultra Trac mode that lets the battery serve you for up to 24 hours. However, in this mode, the heart rate monitor won’t work.

And for athletes and fitness enthusiasts, the watch is equipped with advanced dynamics that can track activities like running, cycling, and swimming.

It will monitor your ground contact time balance, stride length, and vertical ratio with watchful eyes. However, you need to pair the watch up with an HRM run to do so.

Like all the Garmin watches, you can sync the 735XT with the Garmin Connector.

This will enable you to upload all of your data from the watch on the Garmin connect server.

You can share your stats with your friends and monitor it yourself. On top of this, you can also get tailor-made advice from the app based on your activities.


  • Monitors heart rate via the wrist
  • Shock resistant
  • Extended battery life on smartwatch mode
  • Capable of tracking running, cycling, and swimming activities
  • Connects with Garmin Connect


  • If you want to save battery on the UltraTrac mode, the heart rate monitor won’t work
  • Requires an HRM run to monitor running, swimming, and cycling activities

Garmin Fenix 3 HR or Garmin Forerunner 735XT?

Garmin Fenix 3 HR or Garmin Forerunner 735XT

Now that we are done reviewing the two products, it is time to look at the differences that exist between them.

These differences set them apart from each other and can play a crucial role in helping you make your decision. So, without further ado, let’s have a look at it:


Price is an essential factor that determines the buyer’s decision to a vast extent.

In this sector, the Fenix 3 HR falls in the more expensive category. Its price is about a hundred dollars more than the cost of the Forerunner 735XT.

So, if you are looking for a budget watch, the Forerunner one will be more suitable for you.

Battery Life

Battery life is another crucial factor that can make or break the deal. For the Fenix 3 HR watch, the battery will serve you for as long as 16 hours.

But the battery life of the Forerunner 735XT watch is shorter in comparison.It will only go on for 14 hours while on the GPS mode.

And on the Ultra Trac mode, the Fenix watch’s battery will last for 20 hours, whereas the Forerunner watch will only serve you for 11 hours.

Screen Resolution

The screen’s resolution determines the readability of the information displayed on the monitor.

With low resolution, you have to strain your eyes to read what is on display. So here, the Fenix 3 also stays ahead of the Forerunner.

Its screen resolution is 218×218 pixels to the resolution of the Forerunner watch is only 150×215 pixels.


In terms of weight, the Fenix watch weighs heavier at 82 grams. On the other hand, the Forerunner 735XT is much lighter in comparison and only weighs 40.2 grams.

Frequently Asked Questions

Does Garmin Fenix 3 hr have sapphire glass?

Yes, this watch comes with a sapphire glass screen that is resistant to scratches.

It also enables superior display quality that is clearly visible even under the bright sun or during night time.

How long does Fenix 3 HR battery last?

The battery of life it lasts for 16 hours while on the GPS mode and can go on for as long as 20 hours on the Ultra Trac mode.

And on the smartwatch mode, its battery will serve you for up to 14 days.

How do I save battery on my Garmin watches?

In order to save battery on these watches, you can reduce the timeout of its backlight or reduce its intensity.

You can also switch on the UltraTrac mode instead of the GPS mode. Lastly, you can disconnect it from your smartphone and other devices to extend its battery life.

Can the Garmin 735XT be used during swimming?

This watch comes with a water-resistant 5 ATM rating, which enables it to endure depths up to 50 meters.

Therefore, you can use it while swimming.

How accurate is the Garmin Forerunner 735XT’s HRM?

This watch’s HRM tracker is somewhat accurate but not entirely precise compared to the chest-strap heart rate monitor.


We hope that your dilemma regarding the Garmin Fenix 3 HR and 735XT has been resolved by now.

The Fenix 3 is more expensive with better accuracy and display, while the Forerunner one is also a good watch at an affordable price.


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