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Head to Head

Amazfit T-Rex 3 vs Garmin Fenix 8

The Fenix 8 reaches Garmin's max analytics tier and its best-in-class display and build, but for $730 more than the T-Rex 3, which delivers the rugged, long-battery outdoor experience most people actually need at a fraction of the price.

Amazfit T-Rex 3Amazfit

Amazfit T-Rex 3

4.4
Best Rugged Value
Garmin Fenix 8Garmin

Garmin Fenix 8

4.7
Best Display & Build
$269
Lower price
MSRP
$999
Full Smartwatch
Watch Type
Full Smartwatch
Solid Training Data
Training Data
Maximum Depth
More data
iOS & Android
Phone
iOS & Android
4.4
Rating
4.7
Higher rated
42 hrs
Longer battery
GPS Battery Life
40 hrs*
Dual-Band
GPS
Dual-Band
65g
Lighter
Weight
73g
46mm
Case Size
43/47/51mm
Yes
Wrist Calls
Yes
Yes
Offline Maps
Yes
Local files only
Offline Music
Spotify/Amazon Music
More music options
10 ATM
Water Resistance
10 ATM
Best Rugged Value
Notable For
Best Display & Build
Best For
  • You want a rugged, all-day AMOLED watch without flagship pricing
  • Training-tier analytics already cover what your outdoor activities need
  • You want Garmin's deepest training analytics and best-in-class display and build
  • $730 more is worth it for the flagship ecosystem and reputation
The Full Story

The T-Rex 3 packs a 2,000-nit AMOLED display, dual-band GPS with offline maps, and 27 days of typical battery life into a MIL-STD-810G rugged case, all for a fraction of what Garmin or Suunto charge for similar durability. It won't match a Fenix's ecosystem depth, but as a budget alternative to the outdoor flagships, it's hard to beat.

The Fenix 8 folds the old Epix line into Garmin's toughest case, adding a speaker and mic for calls plus genuine smartwatch-level interactivity. It's an outdoor watch first, but the running analytics underneath are as good as Garmin gets.

*Estimated — this model's exact GPS battery life isn't published by the manufacturer. All figures are standard GPS mode, midsize case, no solar boost.

†Estimated — this model launched too recently to have an established customer rating yet.

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