Buy the Garmin vívoactive® 5.

It tracks your training for a week between charges and does not care which phone is in your pocket.

What was compared

1. A week of battery, not a day
The vívoactive 5 runs up to 11 days per charge, while the Apple Watch Series 11 is built around roughly a day of real use and needs nightly charging. You stop babysitting a cable and actually wear it to bed for sleep tracking.
2. Works with any phone you own
The vívoactive 5 pairs with Android and iOS, so switching phones later never means abandoning the watch. The Apple Watch Series 11 only works with an iPhone, locking you into that ecosystem for as long as you own it.
3. $100 saved for the same fitness basics
At $299 against $399, the vívoactive 5 costs $100 less while covering the same daily essentials: heart rate, sleep, GPS workouts and energy tracking. That gap either buys accessories or just stays in your pocket.
4. Sharper for chasing a real 5K time
Testing this exact matchup gave the vívoactive 5 the edge running a 5K, thanks to GPS accuracy and dedicated sports profiles built for training, not just alerts. If workouts are the point of the watch, Garmin is built for that job first.
5. Yes, Apple's screen and sensors are sharper
The Series 11's always-on display and ECG sensor are genuinely nicer than the vívoactive 5's. That polish only pays off if you're already an iPhone owner wanting clinical-grade extras; for most people chasing daily fitness tracking, 11 days of battery and cross-platform freedom wins more often.