Garmin Forerunner 45 vs 735XT – Comparison of 2023

A running watch is a valuable investment to make and one that is often necessary if running is your choice of workout.

Amazing advances in technology allow us to keep track of our fitness levels during running by just simply strapping a watch around the wrist.

The Garmin Forerunner 45 and the 735XT have made a name for themselves amongst runners. Both have useful features that will make running fun and worthwhile.

But the question remains, “What’s the difference between these two products?†In this Garmin Forerunner 45 vs. 735XT breakdown, we will explain the key differences between the watches, and help you access which one suits your needs.

Garmin Forerunner 45

When in pursuit of fitness, you want the best companion to keep track of your progress.

The Forerunner 45 is just the companion you need. Slight and lightweight, you can take with you anywhere, anytime.

Equipped with a GPS tracker, you can track your pace and distance during your run.

With its state-of-the-art heart rate monitor, you can keep a watch on your heart rate as well.

Its high-quality connectivity features allow you to receive text, calls, and notifications, ensuring you are never under the radar when it comes to keeping in touch with others.

If you pair it up with your smartphone, you can access music settings as well, synchronizing it with your runs or workout.

Also, when running outdoors, safety is a key aspect. Sometimes, you may be faced with hazards, injuries, and dangers.

This watch has tracking features to keep tabs on your movement. You can customize emergency contacts on your phone and use the watch to send notifications or messages to those contacts in case of danger.

And it is equipped with an updated weather widget that lets you know in advance whether conditions are suitable for outdoor exertions.

This comes in handy in places where the weather can be unpredictable. With multiple sports apps, you have the freedom of running, swimming, meditation, and much more.

You can measure your calories burnt and see how far or close you are to your target.

Finally, the battery lasts up to a week on watch mode. This is useful if you are a busy person on weekdays and have little time to charge the watch periodically.


  • Light and comfortable
  • Security and tracking features
  • Updated weather widget
  • Strong connectivity
  • Calorie tracker


  • Short battery life when on GPS mode

Garmin Forerunner 735XT

Do you wish to take your fitness to the level of your favorite athletes? The Forerunner 735XT is the perfect device to help you crank up your game.

Starting off, you have wide accessories of features to choose from. The heart rate monitor will measure your pulse right off of your wrist and give you real-time readings—a very useful feature for aspiring professional runners.

It also provides you with oxygen volume intake information, and this will help you regulate your pace and breathing depending on your goal.

The recovery advisor will signal you when to take a pause and charge up for another round.

And the watch is highly versatile, and you can run, swim, jog and cycle at full pace while wearing it.

Being water-resistant means, you won’t have to take it off even when you are in the shower.

The lactate content in your muscles is an important thing to know, especially for long-distance runners.

When paired with a heart rate monitor, the watch displays the lactate level in your muscles, so you can know when to rest.

With its connectivity features, you can get access to top apps and customize them to your will.

You can also receive notifications and alerts to stay updated with friends, family, and work at all times.

Moreover, the battery has three distinct modes, with the watch mode lasting 11 days, which means you don’t have to worry about low battery life during work.


  • Can be worn as an everyday watch
  • Capable of downloading a multitude of apps and widgets
  • The product can measure lactate amounts in your body
  • Compact design


  • Advanced features will only work when the watch is paired with separate monitors (e.g., stride length)

Related Guide: Garmin Fenix 3 or Fenix 6

Garmin Forerunner 45 vs. 735XT Comparison

Right, so it’s now time for the much-awaited comparison between the two watches. This section will clear the air about some differentiating features.

Battery Life and Longevity

While both products have similar battery life when running on the normal watch mode, the 735XT runs for 11 days, which is 4 days more than the Forerunner 45. The 735XT also has an Ultra mode for strenuous work or exercise.


Both have good connectivity features and can pair up with your smartphone. The Forerunner 45 allows you to control your choice of music on your phone. And the 735xt has more apps connectivity, however.

Safety Tracking

The Forerunner 45 has a robust tracking system and can be paired with your smartphone to enable emergency contacts.

It can also send real-time location information to your emergency contacts, hence making you feel more secure.

The 735XT includes live tracking, though not as robust as the Forerunner 45.


The 735xt has a color display while the Forerunner 45 has an LCD display that is easier on the eyes.

Weight and Comfort

Weight and Comfort

Both are similar in weight, but the Forerunner 45 weighs slightly less at only 1.28 ounces, compared to the 1.60 ounces for the 735xt.

This subtle difference in weight may be noticeable to professional athletes, as well as sports watch enthusiasts.

Frequently Asked Questions

Here we have answered some of the most common questions you may have when buying or considering buying running watches. We hope this FAQ section will clear the air regarding some key details.

Are all running watches suitable for multipurpose training?

Not all running watches are suitable for multipurpose training.u003cbru003eu003cbru003eMost only have databases for single activities like jogging. However, the products we reviewed today are definitely suitable for multipurpose training.

Can I connect to the internet using any running watch?

No, many running watches donu0026acirc;u0026#8364;u0026#8482;t have this feature. The 735XT and Forerunner 45 are unique because they allow you to sync with your smartphone and connect to the internet.

What safety features can I avail using the reviewed watches?

Both watches reviewed have stable safety features. This includes tracking, GPS, and sending emergency notifications to emergency contacts.

How can I keep track of my fitness parameters using these watches?

Both, the Forerunner 45 and the 735XT watches allow for a constant and real-time pulse and heart rate monitoring, as well as oxygen intake measurements.u003cbru003eu003cbru003eThey will also display your stress levels and will notify you to take breaks and pauses. So yes, they will monitor your fitness at all times.

Are the batteries long-lasting?

u003cbru003eOn standard watch mode, the batteries last over 7 days each. When used as a GPS, you can expect over 12 hours of uninterrupted power supply.


The Garmin Forerunner 45 vs. 735XT was quite a battle! With all that being said, you can clearly see that there are certain key aspects to consider when making a choice.

Hopefully, this guide gave you the relevant knowledge you needed to make your pick. So, go out there and make the right choice.

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