Garmin Fenix 8 vs Apple Watch Series 10

By Billy G. · Founder & Lead EditorVerified May 28 by Billy G.

Garmin Fenix 8
Garmin Fenix 8
Apple Watch Series 10
Apple Watch Series 10

Verdict: Garmin Fenix 8 outperforms on battery and sports features with up to 29 days runtime and advanced GPS per RTINGS and Notebookcheck data, while Apple Watch Series 10 wins on display brightness and ecosystem integration with 2000 nits peak per CNET. The Fenix 8 is the clear winner for endurance athletes needing 10+ day battery, but Series 10 is preferable for iPhone users focused on health notifications.

Winner: Garmin Fenix 8

Garmin Fenix 8: 8.5/10

Apple Watch Series 10: 7.5/10

Spec-by-spec comparison

Garmin Fenix 8Apple Watch Series 10
Battery LifeUp to 29 daysUp to 18 hours
Display Size1.3-inch AMOLED1.9-inch or 2.1-inch Retina
Weight——
Water Resistance10 ATM10 ATM

Garmin Fenix 8

What works

  • Up to 29 days battery life on a single charge
  • Advanced multi-band GPS and training metrics
  • Built-in dive computer with 10 ATM rating

What doesn't

  • Higher price point than most smartwatches
  • Less polished app ecosystem than watchOS

Apple Watch Series 10

What works

  • Seamless integration with iPhone and Apple ecosystem
  • Bright always-on Retina display with thin bezels
  • Comprehensive health sensors including ECG and blood oxygen

What doesn't

  • Requires daily charging
  • Limited to watchOS with fewer advanced sports metrics than Garmin

Bottom line

Our pick: Garmin Fenix 8.

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