First-generation product — no historical cycle data to predict a successor
Full details →| Fitbit Air | Garmin Fenix | |
|---|---|---|
| Pricing | ||
| Starting price | $99★ | $999 |
| Subscription | ℹ️ Optional — $99/yr | ℹ️ Optional — $70/yr |
| Hardware | ||
| Weight | 12g★ | 53g |
| Water resistance | 50m | 10ATM★ |
| Battery | 7 days | 16 days★ |
| Always-on display | ❌ | ✅★ |
| GPS | ❌ | ✅★ |
| Cellular | ❌ | ❌ |
| Platform | iOS & Android | iOS & Android |
| Tier | Fitness Tracker | Sports GPS |
| Buy timing | ||
| Released | May 26, 2026 | Aug 25, 2026 |
| Cycle advice | good | good |
| Deals advice | great★ | neutral |
| Next model | — | — |
Unlike WHOOP, there is no mandatory membership — pay $99 once and use Fitbit Air with the free Google Health app. Google Health Premium ($9.99/month) is optional.
Continuous heart rate, SpO2, HRV, and skin temperature tracking plus background FDA-certified AFib detection, in a 12g pebble designed to be worn and forgotten.
A week between charges, with a 5-minute top-up delivering a full day of use — significantly less downtime than WHOOP's slide-on charging system.
Double the map storage of the Fenix 8, with 50% more RAM and 30% faster map panning for routable built-in maps.
AMOLED on every Fenix 9, with up to 29 days on the 51mm. The Fenix 9 Pro Solar reaches up to 57 days with solar charging for trips where charging is impossible.
Stamina zones, expanded rucking with adjustable pack weight, and indoor rowing metrics join Garmin's existing training analytics, plus a 40m dive rating.
The right pick depends on what you optimize for.
$396 vs $1209 over 3 years.
16 days vs 7 days battery.
11 sensors.
12g.
Health-focused users who want passive, 24/7 biometric tracking without a screen on their wrist. Particularly strong for those drawn to WHOOP but put off by the subscription model — the Fitbit Air delivers comparable core health data for $99 outright. Works with both iOS and Android.
Full details →Expedition athletes, adventure racers, triathletes, mountaineers, and divers who need the most capable and durable GPS watch Garmin makes. Also for anyone who wants Garmin's best — full stop.
Full details →