Amazfit T-Rex 3 vs Polar Pacer Pro

Amazfit T-Rex 3 (42 h GPS, 68 g) vs Polar Pacer Pro (35 h GPS, 41 g). Side-by-side spec comparison: battery, weight, maps, multi-band GPS and price. Which GPS watch should you buy?

Amazfit T-Rex 3AmazfitAmazfit T-Rex 3

Ultra-rugged outdoor watch with dual-band GPS, offline maps and a 2,000-nit AMOLED display, at a mid-range price. 42 h in maximum-accuracy mode and up to 27 days in daily use. Military standard, 100 m water resistance and onboard music. Garmin Instinct-style toughness for far less.

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Polar Pacer ProPolarPolar Pacer Pro

Ultra-light running watch (41 g) focused on power-based training and Polar's running metrics. 35 h of battery in GPS mode and breadcrumb navigation. Simple, thin and comfortable, with one of the best training-analysis platforms for road and light-trail runners.

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Spec-by-spec comparison

SpecAmazfit T-Rex 3Polar Pacer Pro
GPS battery42 h35 h
Multi-band batteryYes
Smartwatch27 days7 days
Weight68 g41 g
Maps
Multi-band
Music
DisplayAMOLEDMIP
PriceEntryEntry

GPS battery = each manufacturer's standard GPS mode; multi-band = dual-frequency (maximum accuracy). On Suunto, Polar Grit and Amazfit T-Rex the GPS figure already corresponds to dual-band mode. Figures verified against the manufacturer.

Verdict

For maximum autonomy on long ultras, Amazfit T-Rex 3 lasts longer in GPS mode. If you want the lightest watch on your wrist, go for Polar Pacer Pro. Only Amazfit T-Rex 3 brings onboard topo maps for navigation. Both sit in the same price segment, so let battery, weight and the feature you value most decide.

View on Amazon: Amazfit T-Rex 3View on Amazon: Polar Pacer Pro

Frequently asked questions

Which lasts longer, Amazfit T-Rex 3 or Polar Pacer Pro?
Amazfit T-Rex 3 offers 42 h of GPS battery and Polar Pacer Pro offers 35 h, so Amazfit T-Rex 3 lasts longer for long efforts.
Which one is lighter?
Amazfit T-Rex 3 weighs 68 g and Polar Pacer Pro weighs 41 g; Polar Pacer Pro is the lighter of the two.
Do both have onboard maps?
Only Amazfit T-Rex 3 includes onboard topo maps.
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