Garmin - Instinct 3 – 50 mm, Solar
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Reddit Reviews:
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Last updated: Dec 31, 2025 Scoring
Liked most:
655
73
"especially because of the battery life. ... The mouse I had right before this was the steelseries super light one, that was an every other day charge at minimum. Whereas this one is like once a week at most - and I work from home and game all night."
"offers significantly better battery life ... insane battery life"
"Oh, and the battery lasts days even when exercising a lot (weeks without excercise)."
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."
89
3
"There's a "Climb Indoor" activity that I use for both indoor/outdoor roped climbing and there's a bouldering activity for bouldering."
"it works perfectly for what you want!"
"my Instinct 3 works perfectly for cycling."
10
3
"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."
"it tracks sleep, workouts, altitude, and a plethora of other outdoor activities."
9
0
"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."
"Had a 4 mile swim in a lake that looked pretty accurate, way better than I expected."
"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."
Disliked most:
58
121
"The thing whoop is giving me is wildly inaccurate HR readings. ... Did a casual bike ride with my child yesterday afternoon and whoop gave me a 187 high HR. This was a really slow like 4 block bike ride. ... AW said 108hr peak. Ive biked hard, ran as hard as possible doing max HR tests with my H10 chest strap and never hit above high 160s. ... Im not sure whats going on but its been doing this type of odd HR readings all week."
"I had Whoop for three months and it started showing a very bad data. Like catastrophicly bad. ... Bought Polar chest strap to check my HRV, it was VERY different and was showing me my normal data, data that whoop originally showed to me as well until three months into use it stopped."
"HR reading on Whoop are known for being absolutely aweful. ... Better having an accurate reading every 5 minutes than multiple bad readings every seconds. ... Whoop has awesome software and data analysis, but makes it somehow unusable because of bad hr data in. ... If HR accuracy is not a problem for you, and only follow "very general trends", yeah Whoop is a cool product. But if you are at some minimal point serious about HR accuracy, for real sport / performance / improvment, you cannot relly on it. ... If a Polar device, Garmin, apple watch says it's at 80 with readings every minute or so, and whoop says 65 every seconds, your "constant readings" are not worth anything. Garbage in, garbage out. ... Even counting it manually with a timer and my finger on my neck would be more accurate. ... their linear HR sensors are poor quality, and not the ideal way of positioning them (VS circular patern)."
3
13
"the screen is too small ... it's difficult to use with gloves on ... it's just completely and pointlessly impractical to actually use for anything meaningful on the trails regarding the map ... looking at a map on your wrist is less convenient than you might think."
"Main issue is no maps."
"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."
0
7
"But those are a fair bit bulkier."
"The Instinct was quite bulky and doesn't really 'dress up' very well."
"It's definitely a bulk "rugged" watch"
0
1
"it's very tedious ... I simply use a notebook for weightlifting."
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."
Had AW 6, 7, 10... Had Garmin Fenix 7 somewhere between AW... Now with Garmin instinct 3. ALl has pros and cons. none is perfect. For me it's great to switch from time to time... I would happily do the same between iphone and android, but the cost of switch in terms of software is crazy...
r/GarminWatches • AW to Garmin - and maybe back?? - be honest ->What Garmin claims and real world texts are not the same. Real world texts are showing the 3 to have worse battery than the 2x
r/GarminWatches • Best Garmin for Military Purpose ->https://forums.garmin.com/outdoor-recreation/outdoor-recreation/f/instinct-3/404601/instinct-2-45mm-solar-vs-instinct-3-45mm-battery-life It is not the only place that has done tests, and found it worse or just the same. The YouTube "reviewers" only state the Garmin spec and don't actually test it. Probably because they want to keep getting watches to review. Perhaps it has been fixed with firmware, but I find it interesting that you can't find anyone showing how much it has improved the battery life. If it really was that much more people would be talking about how it is improved. That has not happened.
r/GarminWatches • Best Garmin for Military Purpose ->I took a Garmin Instinct Solar in 2022 and loved having it. I used a small USB-C adapter-dongle to charge the watch and carried either one or two 10,000mAh power banks, along with an iPhone and InReach Mini 2, so similar power demands. While watch settings were heavily changed to optimize battery life, I was able to keep GPS and heart rate tracking active. I don't recall a single day where I ran out of battery after pausing during big breaks like lunch, and didn't find it annoying to do so. The stats were useful for managing my heart rate when things were tough, knowing roughly where I was (mileage or elevation-wise) without needing to check FarOut, and helped me understand and develop my pacing and pacing prediction accuracy (short legs). I've also found the data to be great post-trail. Sometimes, I'll look at my trail journal and have a question about the day (weather, distance, difficulty, start/stop location, detours or side-quests, etc.) - days can blur together, or specifics can become vague over a couple of thousand miles and 100+ days. The tracking provides answers if not strong hints. As a stupid but personally worthwhile example, I used this info to drive hours east to an access road north of Truckee and visit a camp spot I couldn't remember, despite speaking to multiple people in the group, even after looking at their photos and videos 😂
r/PacificCrestTrail • Do you record your PCT thru-hike on a fitness tracker / smartwatch? ->I've took the Instinct 3 Solar to replace my Forerunner that replaced my Apple Watch. 15+ days battery battery life with Solar. Would I turn off some sensor readings through the day, I would get 30 at least.
r/garminforerunner • Goodbye Apple Watch! ->Given that sleep is super important + you hike/backpack often, I’d go with the Garmin Instinct 3 (or equivalent) if your budget allows. It gives you the features you’d use, will hold up on trails and give better data than basic trackers. If you find a deal on the Coros APEX 2 Pro and you’re willing to stretch, it’s a premium move. More watch recommendations - https://alaskanarrows.com/best-smartwatches-in-2025-for-hiking-and-running/ For me personally is battery being a big pain point. The more features they cram in, the more I’m stuck charging every day like it’s a second phone which is one reason I always drift back toward Garmin for hiking and outdoor stuff because at least they last longer and actually track elevation and terrain in a way that makes sense. But even then, the UI can be clunky and the “insights” still feel vague unless you’re already someone who knows what HRV actually means.
r/hikinggear • Recommendations for smart watches??? ->This! I have a Garmin instinct Solar and I can’t wear it all the time because it starts rubbing my skin off. lol
r/whoop • Fitness Tracker: Pros and Cons ->Instinct 2x solar or 3 solar would be the best choice, ruggedness & functionality all in one
r/GarminWatches • Buying for my boyfriend! ->My almost 10 year old Forerunner 735XT lasts longer than that, even if I keep it on during showers and record my commute to work and back every day. Newer, more powerful Garmin watches, like the Enduro 3 or Instinct 3, are even more impressive.
r/Garmin • Apple Watch Ultra 3 after 8 years of Garmin, 24 hours review. ->I looked into this myself the last few weeks. Samsung galaxy eatch(ultra) is allright but not as good as Garmin. At least that's what revieuws of the watches told me. Samsung is more good in the smart part. Not necessary the fitness/sport industry. I've chosen the Garmin instinct 3. Not only for fitness purposes but also for hiking.
r/smartwatch • Good fitness trackers? ->While I agree having come from a Garmin instinct solar with incredible battery life. The pixel watch 4 needs to be charged every ~2 days and has fast charging. So take it off, pop it on the charger, have a shower and it's back to 100%. It's seriously impressive.
r/GooglePixel • The Pixel Watch 4 Is the Most Repairable Smartwatch on the Market ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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