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Amazfit T-Rex 3 — AMOLED · 27-day battery · Multi-band GPS
Amazfit

Amazfit T-Rex 3

AMOLED · 27-day battery · Multi-band GPS

88
/ 100
From $299
VS
Garmin fenix 7 — 2022 · Fitness + health
Garmin

Garmin fenix 7

2022 · Fitness + health

88
/ 100
From $799
Specdex verdict

Dead heat — it comes down to priorities.

In our weighted Specdex score, Amazfit T-Rex 3 lands at 88 and Garmin fenix 7 at 88. With scores tied, the decision hinges on which sub-scores matter most to you.

Pick Amazfit T-Rex 3 if…

  • 27-day battery life
  • Multi-band GPS at $299
  • Free Zepp app — no subscription

Pick Garmin fenix 7 if…

  • Multi-day fitness tracking
  • GPS + heart rate
  • Notification mirroring
Amazfit T-Rex 3 88
vs
88 Garmin fenix 7

Score breakdown

Amazfit T-Rex 3
88
health 86
battery 100
display 88
software 80
durability 92
fitness 0
Garmin fenix 7
88
health 86
battery 94
display 88
software 0
durability 86
fitness 88

Specs side-by-side

Amazfit T-Rex 3 versus Garmin fenix 7 — full spec comparison
Spec Amazfit T-Rex 3 Garmin fenix 7
Case
48 mm steel + plastic
Display
1.5″ AMOLED, 480×480
Chipset
Custom MCU
Battery
27 days standard / 7 days heavy use
Connectivity
GPS multi-band, BT 5.2
Water resist
10 ATM + IP69K
Release year
2022

Amazfit T-Rex 3

Pros
  • +27-day battery life
  • +Multi-band GPS at $299
  • +Free Zepp app — no subscription
Cons
  • App polish trails Garmin
  • Limited third-party apps
  • No LTE option

Garmin fenix 7

Pros
  • +Multi-day fitness tracking
  • +GPS + heart rate
  • +Notification mirroring
Cons
  • Battery life varies dramatically
  • Companion phone required
  • Screen-on drains battery

FAQ: Amazfit T-Rex 3 vs Garmin fenix 7

Which is better, Amazfit T-Rex 3 or Garmin fenix 7? +

Both score 88 on our weighted rubric — tied. Your best pick depends on the sub-scores above.

Is Amazfit T-Rex 3 worth the price? +

At $299, Amazfit T-Rex 3 delivers a Specdex score of 88 — strongest in battery.

Is Garmin fenix 7 worth the price? +

At $799, Garmin fenix 7 delivers a Specdex score of 88 — strongest in battery.

Does Amazfit T-Rex 3 or Garmin fenix 7 last longer? +

Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.