Garmin - Fenix 6X Sapphire
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Reddit Reviews:
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Last updated: Dec 15, 2025 Scoring
Liked most:
184
24
"I am a power lineman, so I needed a rugged watch that could get banged around, be exposed to energized high voltage, and very harsh conditions. The TREX has worked flawlessly through all that."
"it’s super durable. ... The watch clasp has gotten scratched up but the face is still fine after nearly a year of climbing inside with it. ... instinct is very durable"
"tanky ... Only thing you really lose is a touch screen but that's better for it's ruggedness and water resistance."
300
22
"the battery lasts 2 weeks, that's with 5 days worth of tracking runs and day to day use. Incredible."
"16 days battery life on my fenix. ... The other aspect I really appreciate about my fenix is the battery life. 16 days or so. With everything I have to change these days (laptops, mice, keyboards, headphones, watches, phones), I appreciate not having to worry about it too often."
"Oh, and the battery lasts days even when exercising a lot (weeks without excercise)."
18
1
"it has the flashlight, probably the most useful tool I’ve ever had in my life. You’ll use it daily and it’s so helpful in the most random times."
"Flashlight on my Fenix is worth A LOT of money to me. ... Having had it, I could not go back. ... I would happily pay 200 extra for it I use it so much. ... Having a flashlight on your wrist is incredibly handy."
"On my fenix 7, I love the flash light...totally unexpected top 3 feature. :)"
152
8
"a recent update even added Strength training to the Garmin Coach feature. It used to just be running plans. ... But aside from that you can make your own strength training workouts. ... I personally really enjoy the ability to make my own workouts and fill out the calendar in the app to have a custom training plan that I know works for me."
"The suggested daily workouts seems to integrate with the running calendar and a mirage of other metrics to help you get to the set goals, I found the SDW much better than the Garmin Coach on the Venu 2s."
"Garmin tracks your heart rate and HRV 24/7 continuously. ... It is very accurate in tracking my health when I got sick 2 weeks ago. ... I can see my ever increasing “stress” value and declining body battery during that time."
Disliked most:
20
47
"I used to find that wrist HR sucked for rowing"
"the hr reading is incorrect. ... 20 dollars band from Samsung does a better job"
"The discrepancy is much higher for HR than running dynamics. ... I think it is straight up irresponsible to rely on wrist-based HR is you’re using HR as a part of training"
10
60
"chunky edges on my 4.5 inch wrist which is tiny"
"So much lighter and low profile than my Epix."
"dancing with a fenix 8 will look & feel ridiculous."
8
50
"fenix 8 pro has LTE and satellite connection which not working at all, or working in a very bad way. ... I made many runs, never had a possibility to send message via garmin messenger, call via garmin messenger, even livetrack, on LTE, has big lags, stuck in random places, etc."
"Garmin’s notification integration with iOS is dogshit."
"many workout functions require a working internet connection via Bluetooth to the phone to operate. ... None of the complex metrics are done on the watch. Not. Even. Close. ... Garmin Connect often requires an active internet connection. It really annoyed me when I owned my Fenix. ... Garmin Connect often requires an active internet connection for many features. I discovered this when I owned one. It pissed me off."
0
3
"All were terrible at sleep tracking for me. ... I found Garmin had me getting terrible sleep every night, never catching my actual sleep properly and having me sleep when I was wide awake. ... The nap feature was a total disaster for me, giving me 3-4 naps daily while I was a work at my desk, certainly not sleeping. ... when the sleep data is being used for a great deal of the metrics the data became useless for me."
"Garmin doesn't capture REM sleep accurately ... Hoping they fix soon because their training readiness scores will always be off due to this"
"Garmin is also notorious for giving bad sleep metrics, etc."
There is Garmin Swim (IMHO essentially it is a ForeRunner, but swim has been put in focus; review here https://www.dcrainmaker.com/2019/10/garmin-openwater-review.html). However, modern Garmin watches are all able to track pool swim as well as gym workouts (you might have to set exercises later in the app if you want to track muscle groups affected). Essentially ForeRunner is for runners mostly, Forerunner 9xx is focused on triathlon, Fenix is mostly for outdoors - but again, all of them can do almost the same. I’d go with Fenix if budget allows.
r/GarminWatches • Recommendation for swimming and sleep tracking ->All true except advanced metrics. They are also present in Fenix (it has even more features for hiking) and Instinct. Forerunner is not more advanced. The rugedness is mostly about the bezel. In fenix and instinct it has a rim which gives extra protection to the screen. But that means rugged watches are more bulky what can be a problem in the gym. The real question is lightness of forerunner vs battery life of fenix /instinct
r/GarminWatches • Too many watch models ->I've only been swimming for last 7 months, but Fenix 6x has been doing great!!! Over 100 swim sessions.
r/Swimming • Watch that measures heart rate underwater as accurate as possible ->It's fantastic. It also depends how much accuracy is a factor in your workouts. Nothing is going to beat a chest strap, but I'm okay being within 5 beats+/- with my Fenix.
r/Swimming • Watch that measures heart rate underwater as accurate as possible ->Fenix 6X Sapphire! Works really well in open water. In the pool, it may lose a lap here and there but I've never lose more than 4 laps in a 3000 yard swim.
r/OpenWaterSwimming • What GPS watches are you using to track your swims? ->Garmin Fenix 6 and 7 are having some hot deals right now. Go Sapphire for the extra protection. But if you only need the bare minimum, Forerunner 2xx
r/triathlon • Triathlon Watch Without Smartphone ->why not both? if you get like a Fenix 6 used then you can also get a Garmin 130 Plus for the bike. I use my watch for the overall measurement, but the 130 allows me to have a screen in front of me (I don't sync the bike computer to my workouts).
r/triathlon • Garmin watch vs. bike computer ->there's more of us out there than you realize. I'm actually realizing the reason I got the fenix was to have the smallest sports tracker with the highest battery (woman with small wrists) and the best screen (Amoled is visible, wehre MIP is lmost invistible) But I'm finding the overnight data from garmin to be less and less useful or even mentally healthy, so I'm going back to using my analogs more and more. And they are prettier.
r/Garmin • Garmin, why? ->Get a garmin Fenix, doesnt really matter which model as long as it’s not ancient, off eBay
r/Rowing • Best fitness watch for rowing ->Good comparison! I’ll add that my fenix shows exercise demonstrations on the watch. I use it a lot
r/Garmin • Whoop vs. Garmin ->I’ve used several generations of the Garmin Fenix for resort skiing, backcountry skiing, and Nordic skiing in extremely cold temperatures without issue. They’d be fine in very cold weather, but it’s also important to note because you’re exerting yourself and it’s on your wrist, they’re actually probably a lot warmer than the air temperature, so they’ll be more than fine.
r/xcountryskiing • Smart Watches in Cold Weather ->Same. I can’t actually see me ever upgrading unless it dies. I’m not sure what else I need/want from a watch.
r/trailrunning • what fitness watch you all using? ->Currently have a Fenix 6, since June 2021. I had a vivoactive HR for 3.5 years before that.
r/triathlon • Who’s switching to the new Apple Watch Ultra 3?! ->I got a fénix 6 that works great. Will sell it to ya for $250. In great condition. I use fénix 7 w whoop and it’s great. Lmk
r/whoop • Best running watch to go along with Whoop? ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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