21 in Fitness Trackers
Garmin - Instinct 3 – 50 mm, Solar
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Reddit Reviews:
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Based on 1 year's data from Mar 17, 2026 How it works
Liked most:
15
0
"Had a 4 mile swim in a lake that looked pretty accurate, way better than I expected."
"It lasted the whole trip on a single charge which including 75 hours of tracking with 43 hours of movement."
"the wearables are nothing more than a data collector for GPS & other monitors (HR strap, cadence, speed etc) - that they excel in. ... Garmin is best at actual training/event data for say a run/ride/tri etc when paired with a HR strap (cadence, speed and power sensors too)."
7
0
"Had a 4 mile swim in a lake that looked pretty accurate, way better than I expected."
"Incredible battery life. ... That is with full GPS use over 30-48 hours. ... I am sure the watch can be switched to battery saver mode when sleeping or not actively using the GPS so it can stretch out a few more days."
"Without even really changing much settings on the watch to preserve battery other then disconnecting it from my phone I get 4 days of gps recording when backpacking. ... I get 4 days of gps recording when backpacking 6-8hr days on my instinct 3 solar 45mm."
13
1
"rugged enough to take some hits at the gym."
"The Instinct 3 is built tough (rugged, reliable) ... If you’ll drop it, bang it, leave it in harsh places, the Instinct’s durability becomes appealing"
"The Instinct/Fenix are better for hiking/backpacking since they’re tougher, with longer battery and more rugged features."
5
2
"The sleep score and body battery is a game changer - It is insane how much this has helped me with better habits in just 6-weeks. ... I can see the difference in my sleep and body battery even if I have two alcoholic drinks at an event or with dinner, or if I have too much caffeine too late in the day. It is helping me understand the effects of these actions on other parts of my life more explicitly."
"The Garmin excels at all of that ... I wear a smart watch to gather my health stats; steps, floors, calories, heart rate etc, and also to get a good measure of my sleep."
"I only really use it for HR, steps and sleep tracking."
31
3
"offers significantly better battery life ... insane battery life"
"I been using mine for two month. I just charged it for the second time and its holding up great."
"I have had it on for 25d and it's still got 6% battery. That's what I'd call a watch!"
Disliked most:
2
4
"Garmin surprisingly messy ... Garmin was all over the place with noisy spikes. ... Garmin Instinct 3 really surprised me with how messy the HR data was. I am very negatively surprised with these results. ... I was really surprised with Garmin, and I am thinking it might have been not tight enough. I have the 50mm version and it is quite bulky, which probably causes a lot of movement, that probably interferes with the reading."
"Garmin has been failing at HR data for a while now, you need a chest stra for activities to get good data."
"In my experience the heart rate monitor on the device itself is average at best."
0
4
"the problem with the maps is that there aren't any. ... The breadcrumb think can work ok in the city, especially if you have a backup device, and not for cycling. Super hard on hiking trails that tend to have forks as opposed to really distinct, right-angle intersections."
"not having maps will not be great for hikes."
"The only thing I miss is that it doesn't have maps"
0
4
"But those are a fair bit bulkier."
"It's definitely a bulk "rugged" watch"
"50mm i3 is probably to bulky for swim"
0
2
"The UI is so bad - I can't believe a massive company such as Garmin has mid-2010's UI on both the watch and Garmin app. The graphs, data presentation and navigation is about 1000 points lower than Apple Health. It is so unappealing it looks like it was created by an accountant. ... I should have focussed more on the UI on the Garmin app - that is mostly my issue. I dont find the Watch UI too clunky but the Garmen App UI seems pretty behind the times."
"But then you don't get the most out of it until you export the data to Strava or similar as the Garmin app is not great."
Rebl11 1.0I have the 3 Solar 50 mm. It tracks HRV, It works well for overall fitness tracking like any other Garmin watch. In 15 days since last full charge it went down to 44% so if you do more activity tracking it should hold for like 3 weeks.
Instinct 3 Solar. -6% in 80 hours after my first full charge so I estimate at least a month. I really need to update my software version so the watch itself can estimate it's battery life. It's just stuck at 11 days for now.
From my quick 5 second search, tattoos will be a problem for all optical HR sensors so a Garmin watch will be just as problematic as an Apple watch if worn on a tattooed area. So a chest strap + bike computer would probably be a better idea. For me personally when I'm not tattooed yet, my Instinct 3 works perfectly for cycling.
FactorSimilar7049 0.6Garmin instant3 or enduro only have to charge it every other week with a lot of gps use
Glad_Secretary146 0.5Epix pro gen 2 51mm and instinct 3 solar 50mm. One AMOLED and one SOLAR I like both screens.
Imthenewbee 0.5Garmin instinct crossover, 28 days battery life, 50 without constant hr measurement. Instinct 2x and instinct 3 solar 50mm have 40 days battery life, 70 without hr. And solar charging.
I downgraded to instinct 3 solar, because I want MIP and the instinct MIP screen is very bright. And because of battery life: 28 days in smartwatch mode in a 45mm case! And because it's much more comfortable to wear than a Fenix, is more resistant to scratches... I only (rarely) miss offline maps. But the breadcrumb navigation is great and much clearer to see than on the color MIP screen of the fenix I used to use.
Instinct has no maps. Enduro has maps and has a MIP screen. The Enduro maps are harder to see than the Instinct breadcrumb, because of several reasons: * the Enduro screen is dimmer, due to 1) colors, 2) sapphire * the breadcrumb trail is clearer, because it's high contrast black and white, while the Enduro trail is pink-purplish on a colored maps with lots of things going on. The picture show the difference. https://preview.redd.it/nzt2o5c9a4nf1.jpeg?width=2814&format=pjpg&auto=webp&s=e952c703a2cc52dd3f73f6cf0b4a88829ac0a397
The instinct had no touch screen. What actually makes the tactix 7dimmer is this: sapphire crystal, solar panel on top of the screen, colour screen, and maybe higher resolution. Maybe the touch screen too, but I don't think so.
izaak9 0.5If you’re looking for something super practical and easy to read, I’d recommend the Garmin Instinct 3 Solar 50mm. The numbers are extremely visible in pretty much any lighting condition, which makes it great for outdoor use. On top of that, you barely need to charge it — battery life is honestly one of its biggest strengths. If you want something similar but much more advanced, then the Garmin Enduro 3 would be the next level option. Same great visibility and insane battery life, but with more features and performance-focused tools.
MacroCheese 0.5OP should try a Garmin Instinct 3 50mm solar! With the right settings and enough sunlight on the daily, you could theoretically never need to charge it again. As someone that uses it for daily bike commutes, I get at least 3 weeks on one charge with it.
sforsyth01 0.5Agreed. Worst thing ever is continuing to research after a purchase. It's how I went on a return & exchange spree from a 45mm Instinct Solar to an Instinct 2X to a Forerunner 570 47mm to an Instinct 3 Solar 50mm to a Fenix 8 AMOLED 51mm to ultimately a Fenix 8 Pro 51mm. I'm settled now. Because I've stopped researching.
Fenix or Instinct series for their ruggedness as a firefighter.
SL0WRID3R 0.5Garmin Instinct 3 solar, 50mm, or Instinct E if you are tight on budget. Works with Healthy365 and has impressive battery life. Expensive, but long lasting. (I got my first gen instinct lasted for 5 years before switching to the current Instinct3)
Timbo1986 0.5Yep I just upgraded my old 45mm instinct (~2018) to the 50mm Instinct 3 solar. Super happy with it! The battery life is insane, I think I read the 50mm Instinct 3 solar has the best battery life of any smartwatch.
ccoates1279 0.4I have the outdoor Garmin 3 Solar so I do climb with it on. If it were any other watch I'd say no. I also wouldnt wear it crack climbing or anything lmao.
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