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Details

  • Feature-packed smart wearable designed for the frequent adventurer
  • Larger face for clean and bold visibility of on-screen stats and notifications
  • Sapphire crystal face adds durability to withstand abuse
  • Heart-rate and oxygen-intake monitoring add insight to workouts
  • GPS and mapping provide navigation and preloaded courses for various sports
  • Weather tracking, altimeter, and compass for rugged trail trips
  • PacePro adjusts pace strategy based on terrain and preferences
  • Syncs with streaming services and stores up to 2,000 songs
  • Item #GRMF00W

Why We Like The Fenix 6X Sapphire Heart Rate Monitor

With a larger face display and scratch-resistant sapphire crystal lens, Garmin’s Fenix 6X Sapphire Heart Rate Monitor is designed to guide our active pursuits and withstand abuse on epic trail explorations. With that additional space, Garmin beefs up the battery life and data storage. The increased size is a worthy upgrade if we have larger wrists or would like a more effortless viewing ability during hard-training. And the 6X functions exceptionally well for daily life in town and transitions with eager confidence off-road and off-grid.


The Garmin Fenix line is well-known for stacking the table with features that reach far beyond telling time and providing an extension to our smartphone notifications. Garmin delivers a premium wearable with the 6X that collects critical exercise data, prompts us when it’s time to push harder, and provides detailed mapping and course planning well as the basics to keep us connected socially, and more.


It manages our activities and training and pushes us further when it’s time. The watch integrates with a broad range of sports like cycling, running, and swimming, and Garmin’s Body Battery Energy Monitor and sleep monitoring features look at accumulated stress and recovery to help guide us on the path towards peak fitness. In-activity features like PacePro help suggest pacing strategizes so we can hit that PR and not overcook yourself.


With more and more specs being added to the 6X, it’s easy to get lost in what it can do for us and our goals. Garmin designs the watch to keep us up to date and on track regardless of our activity or lifestyle. Smart connectivity keeps us informed about the weather, phone notifications, allows Garmin Pay, and even plays music with storage for up to 2,000 songs. And should we want to take a step further and venture off into the deeper countryside, the 6X even keeps tabs on our physical responses to altitude stress and detects incidents that can be sent as alerts to our loved ones and emergency contacts. It’s a watch that never has to leave our side unless it’s charging up for the next adventure.


Details

  • Feature-packed smart wearable designed for the frequent adventurer
  • Larger face for clean and bold visibility of on-screen stats and notifications
  • Sapphire crystal face adds durability to withstand abuse
  • Heart-rate and oxygen-intake monitoring add insight to workouts
  • GPS and mapping provide navigation and preloaded courses for various sports
  • Weather tracking, altimeter, and compass for rugged trail trips
  • PacePro adjusts pace strategy based on terrain and preferences
  • Syncs with streaming services and stores up to 2,000 songs
  • Item #GRMF00W
Housing Material
steelm fiber-reinforced polymer with metal rear cover
Strap Material
silicone
Face Material
Sapphire Crystal
Movement
digital
Pedometer
yes
Odometer
yes
Altimeter
barometric
Barometer
yes
Technical Features
PacePro technology, advanced training metrics, preloaded sport modes, TOPO and ski maps, ClimbPro features, preloaded golf courses, turn-by-turn directions, multi-GNSS support, music apps, safety and tracking features, Garmin pay service, smart notifications, heart rate, energy monitor, Pulse OX sensor
Date Indicator
yes
Alarms
yes
Battery Type
rechargeable lithium
Battery Life
[smartwatch mode] up to 21 days, [GPS mode] up to 60 hours, [GPS and music mode] 120 hours, [expedition mode] 46 days, [battery saver watch mode] 80 days
Includes
charging/data cable, documentation
Claimed Weight
3.3oz
Recommended Use
running, training, mountain biking, cycling, backpacking, hiking, climbing, casual, skiing, snowboarding, golf
Manufacturer Warranty
1 year
Submersible
10 ATM

What do you think about this product?

Overall Rating

4.5 based on 613 ratings

Review Summary

1 Stars - 37 reviews
2 Stars - 25 reviews
3 Stars - 34 reviews
4 Stars - 88 reviews
5 Stars - 429 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

Customer Images

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1 out of 5 stars

April 10, 2025

Bluetooth blues

I have to reset my Garmin Fenix 6X sapphire every day sometimes twice a day, very frustrating

Titch63

Originally reviewed on Garmin

2 out of 5 stars

January 9, 2025

Amazed and Now Disappointed!

I am on my 3rd Garmin (Garmin Swim, Garmin 3HR, Fenix 6X Sapphire) The first two are still going. The 6X has lost the temperature reading (18 months), then the backlight has stopped working (Flickered one day and then never came back) (36 months), Now Bluetooth and screen is getting darker to read, (48 months). Thought I would get a better run than this. The abilities of the watch are amazing but reliability has some questions.

RCSA77

Originally reviewed on Garmin

1 out of 5 stars

July 18, 2024

After 2 years of use does not work

It does not connect to garmin connect, at least 3 times a week i have to reset to original functions because it does not connect to the app, the wifi does not work, i ca not use garmin express because it does not recognize it and finally i can not update the watch

Fenix Nefer

Originally reviewed on Garmin

1 out of 5 stars

June 22, 2024

display white-out at top and bottom buttons

4 years into the use, display whites out at 2 points at the top and bottom buttons. HR strap loses connection, into the 5th strap now, latest a tri strap, awaiting replacement. Highly unreliable watches and straps. I had a fenix 3 before with same issues regarding strap connection. The pulse measurements are highly unreliable as well showing irate HR levels for my age as 190 or so for a60 year old male. I may be trained but not so.

user image
DrKostas

Originally reviewed on Garmin

1 out of 5 stars

June 12, 2024

Difficulty charging

It’s been over a year since having this Fenix 6X sapphire. Went for the upgrade after my Fenix 5 charging port just stopped connecting with the charger. Here I am again with the Fenix 6X hoping for an improvement considering the issue was raised countless of times on the Fenix 5. Please fix this dam issue. Overall the watch is amazing. Just the battery charging issue. No matter how good the watch is, this terribly bad part of the watch makes all the good useless.

Jonathan F

Originally reviewed on Garmin

5 out of 5 stars

May 30, 2024

Goes Everywhere

I have been using this watch for over a year and I take it everywhere I go. Whether it's recording workouts or traveling through the southwest US national parks and across the wide open BLM land it has not failed. It lasts usually up to 7 days if I'm not using it for navigation which can reduce it to 3-4 days, but it charges quickly and I'm back out. If you're an outdoor enthusiast and spend a lot of time away from towns and cities I highly recommend this watch, the software is easy to use and I often set specific waypoints on the map so I'm not constantly checking the paper maps.

BRYAN P

Originally reviewed on Garmin

3 out of 5 stars

April 18, 2024

Excellent watch

The watch had a useful life of less than one year, it had failures in the barometer altimeter and a very important failure in intermittent communication with the telephone

Axel85

Originally reviewed on Garmin

5 out of 5 stars

February 17, 2024

The most complete sports watch!

It really has all the functions one can expect from a sports watch, a beautiful and robust design, a long lasting battery. It would be perfect if Garmin Pay accepted more credit cards in Brazil - unfortunately it only accepts BTG Pactual Mastercard in Brazil.

Rydygier

Originally reviewed on Garmin

1 out of 5 stars

February 14, 2024

nothing works

altimeter doesn't work, ski/snowboards dont work. software updates have broken everything with no fixes in sight

garmin208

Originally reviewed on Garmin

1 out of 5 stars

January 30, 2024

Charging slot

Really angry and disappointed off at the quality of the charging dock/slot of the Garmin watch. This is my second pair, upgraded from the Fenix 5x Exactly the same issue. Struggling to charge. 2 years and the charging dock won’t charge or connect.

Jon fade

Originally reviewed on Garmin