Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Except for 5G/satellite and a bit more battery, U3 has exactly the same features as U2.
The SOC has no extra power or feature, so there is no reason to expect something for the U3 that won't be supported by the U2
 
Last edited:
Of course I forgot my most important habit to stay away from injuries: doing strength training.

I did strength training for the first two years of starting to run and I got injured three times. I had read several meta studies and they couldn't find any definitive proof that strength training helps either in increase in speed or in injury prevention. There are also lots of single studies that show they do help.. That being said, there are a TON of people who swear by it.. I really think different bodies respond differently.. I decided this spring to not do anything other then run and I was up to 80-90 km weeks with not a niggle. But then I added in speed and by week 10 of my 16 week marathon build, I was completely exhausted..I'd come home from a workout and sleep for an hour.. and sure enough, I got injured. Still trying to come back from both the exhaustion and the injury, three weeks in. My marathon is pretty well done for. The stupid mistake obviously was not seeing the signs of being exhausted.. But if the plan says to do something.. I do it !

Oh, I ordered an AWU v3.. All black with the blue trail loop..

Not really going to need it for running as my runs now are like 1km and then wait 24hrs to see if that 1km aggravated the injury or if I can maybe add another 500m or so.. *sigh*
 
  • Like
Reactions: NME42
Battery life ;-)
Yes if you do very long workouts that are impossible to do with an Ultra 2 (14h vs 12h in workout with all ON).
It seems all the improvements come from 5G chip.
It's better, but not really a game changer or not something that will make the Ultra 2 obsolete faster.
 
I had read several meta studies and they couldn't find any definitive proof that strength training helps either in increase in speed or in injury prevention. There are also lots of single studies that show they do help.. That being said, there are a TON of people who swear by it.. I really think different bodies respond differently..
Well we don't use only leg muscles when running, we're using also e.g abdominal muscles to raise the knees, so there is an obvious advantage if those muscles are well trained. In terms of injury prevention, of course there's many more factors - so having a stable core can help but won't save the day if a runner underestimates recovery, stretching, warm-ups etc. Strength training is not a magic bullet but if incorporated into the training correctly, it's definitely beneficial. (Having said that - I'm not very diligent about it myself...)
 
  • Like
Reactions: xDKP and NME42
Yes if you do very long workouts that are impossible to do with an Ultra 2 (14h vs 12h in workout with all ON).
It seems all the improvements come from 5G chip.
It's better, but not really a game changer or not something that will make the Ultra 2 obsolete faster.
To be fair, longer than that even with an AWU2...can't remember the exact number, but I had over 20% left after this 16hr+ effort - I'd be pretty confident in tracking for up to 20hrs.

The cases where a small extra percentage beyond current endurance is "needed" are pretty slim for the vast majority of people...probably those doing 100milers as an 'average' runner (not that anyone who completes 100miles is 'average'!) might struggle with an AWU2.

Even events like Endure24 are well within capability, just take along a powerbank and top up when you inevitably have a break (unless, as mentioned, you're one of those real edge case 100miler+ type runners who are going to attack an event like that non-stop).



(showing this screen as it shows HR data was being continuously collected etc)..

1757513118047.png
 
Yes we can do longer workouts with AWU2, it depends on what you do, the GPS reception, LTE ON/OFF, AOD ON/OFF, if you use an external heart rate sensor (it saves a lot).
I have just took the Apple estimations made with the same conditions to compare.
 
  • Like
Reactions: NME42 and bsmr
As Apple was quite defensive in the past when it came to battery runtimes of the Apple Watch (just the opposite of Garmin, they claim values that can be reached in lab conditions), I am keen to know how the AWU3 will perform in real life. First time since years that Apple claims better battery life.
 
  • Like
Reactions: xDKP and FMUK
Yes we can do longer workouts with AWU2, it depends on what you do, the GPS reception, LTE ON/OFF, AOD ON/OFF, if you use an external heart rate sensor (it saves a lot).
I have just took the Apple estimations made with the same conditions to compare.

Using an external HRM saves a lot ? Interesting. I would have thought the BLE connection would burn more battery than the HRM on the watch. I can tell you what really kills the battery on a run is streaming music. That makes a massive difference in my experience.
 
  • Like
Reactions: NME42
Yes we can do longer workouts with AWU2, it depends on what you do, the GPS reception, LTE ON/OFF, AOD ON/OFF, if you use an external heart rate sensor (it saves a lot).
I have just took the Apple estimations made with the same conditions to compare.
Fair comment.

Rather than talking about the absolute achievable battery life, I guess I was addressing the wider point that increased battery on AWU3 will have next to zero impact for the vast majority of users.

AWU3 will be same as AWU2 practically...you'll be able to sleep wearing it, stick it on a charger in a morning whilst faffing about, go and run a marathon, and track the next nights sleep, just as you always could.

Its only when "normal" (non-workout) battery life approaches a week (~36/48hr GPS tracking capability) that things start to become different. But, as an ex Garmin Epix Gen 2 users even with that kind of battery capability, I stuck it on a charger with pretty much identical frequency as I do my AWU2.

I do know plenty of regular runners who have watches that can go a couple of weeks including tracking all their runs, or up to about a month, and actually they are the only people who have the "gragh, my watch ran flat" issue in reality, as they don't have a regular routine and 'forget' to!

The very few number of 100mile runners I know, would charge to 100% ahead of a big race and are more dialled in to being prepared like that, so ironically they probably actually could manage with shorter battery life (in that "it lasts a week / or 36ish hours of activity" ball park) but being more aware of it!

I guess what I'm saying is - the AWU is probably not really that far off in terms of optimum (a week regular / 36-48hrs activity) for most users, and a LONGER battery life than that might cause MORE battery problems!

Just an opinion. And will the AWU4/5/6 ever get to that level of battery efficiency...who knows!?
 
  • Like
Reactions: xDKP and rbart
I had a Garmin Epix Gen 2 and running say 80-90km weeks, I could almost make it two weeks on a charge with always on..
 
  • Like
Reactions: xDKP
Hi, I know you can start a run using the action button, can you also then end a run by pressing it again?

Also, has anyone managed to reduce the number of data fields and then increase their size? My middle age eyes have trouble seeing the data!
Thanks in advance.
 
Using an external HRM saves a lot ? Interesting. I would have thought the BLE connection would burn more battery than the HRM on the watch. I can tell you what really kills the battery on a run is streaming music. That makes a massive difference in my experience.
Yes, it's really significant.
I have bought a Garmin Edge and a coros HR sensor for biking, I have tried it with my app, and it's really significant for battery life. BLE connection eats less than internal HR sensor
 
  • Like
Reactions: quarq
Hi, I know you can start a run using the action button, can you also then end a run by pressing it again?

Also, has anyone managed to reduce the number of data fields and then increase their size? My middle age eyes have trouble seeing the data!
Thanks in advance.
You need a 3rd party app for that.
With my app, you can use an Ultra for starting, pausing, resuming, segments, change screen and end workout without touching the screen.
 
Big surprise: iOS 26 will have a workout builder from Apple. You can build structured workouts and manage race routes.

 
  • Love
  • Like
Reactions: xDKP and Jana_CZ
It seems battery life enhancements this year mainly come from a different calculation process…
They include more sleep time in their estimation…
So the increase is probably less than expected (as we can see in workout estimates)
 
Big surprise: iOS 26 will have a workout builder from Apple. You can build structured workouts and manage race routes.

That's very cool, finally we don't have to fiddle with the watch screen when creating/editing those workouts 👍
 
Yes, really cool.
I am also interested how I can manage race routes with this feature.
Yes - and I don't dare installing the beta this time (my AW is paired with my primary phone with internet banking and other important stuff that has to keep being functional), but I can't wait to install 26 on Monday. My race routes desperately need a proper cleanup!
 
  • Like
Reactions: NME42
Yes, also upgrading my Ultra 2. The U3 is ticking off many checkboxes for me.
My summer vacation was in Sardinia, where some great trail running often had me without cell connectivity. I could have used satellite there to ping my wife I was okay, as a closed off route made me late and she got a bit worried. So another positive.

Also just saw the big one with custom workouts. That is amazing
 
Last edited:
  • Like
Reactions: NME42 and quarq
Another new this recently - The updated Strava app for Apple Watch (about f****** time) is out. Have segments and other stuff included but missing maybe the biggest opportunity ever: routable maps.

I use Strava a lot on vacations for maps and getting good routes but need to export and import it into Footpath. Single solution from Strava would be pretty good

Any one tested it?
 
  • Like
Reactions: NME42
My summer vacation was in Sardinia,

Sorry, off topic.. What was the overall experience like ? Expensive ? Wife and I are looking for a place to go for our 10nth wedding anniversary. We've visited much of Italy but not Sardinia.
 
  • Like
Reactions: xDKP
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.