I wore the Amazfit T-Rex 3 Pro for a month, and at half the price of an Apple Watch Ultra 3, it gets top marks for value

09 Feb 2026, 13:17 · TechRadar

TechRadar Verdict

The T-Rex 3 Pro is a fantastic smartwatch if your priority is supreme durability, unbeatable battery life, a brilliant screen, and excellent core GPS/mapping capability, all without the premium price tag. If you want a smartwatch with good AI smarts, third-party app integration, LTE connectivity, or advanced safety features, you'll need to look at the more established – and more expensive – competitors. Five stars for value, four overall.

Pros

+Long battery life
+Advanced GPS and offline maps
+Impressively durable

Cons

-Limited third-party apps
-No cellular connectivity (LTE)
-Lacks advanced safety features

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Amazfit T-Rex 3 Pro: One minute review

Amazfit has been on a hot streak recently. Fresh off the release of the Bip 6 and Active 2, the company has now released the latest version of its most capable outdoor watch, the Amazfit T-Rex 3 Pro. The watch is showcased by the super successful ultrarunner and official commercial partner Ruth Croft, who says that Amazfit “gives her the tools she needs without getting in the way of the run."

The Amazfit T-Rex 3 Pro is pitched as a value alternative to premium rugged watches like the Garmin Fenix 8 and Apple Watch Ultra 3. While it costs significantly less, it packs very competitive hardware, making it a compelling option for outdoor athletes and budget-conscious consumers.

With a military-grade (MIL-STD-810H) rating, a titanium bezel, and sapphire crystal glass, the T-Rex 3 Pro is seriously rugged, built to withstand extreme temperatures and is 10 ATM water-resistant, certified for scuba diving up to 45 meters. In addition to its already excellent diving features, the T-Rex 3 Pro has a dedicated dive computer mode like the Garmin Fenix 8 and Apple Watch Ultra 3.

The 1.5-inch AMOLED display is also impressively specced, with 3,000 nits of peak brightness to compete with the latest crop of Apple Watches. Beyond that, the watch offers up to 25 days of typical use on a single charge, a very good feat considering Garmin’s battery lives have been creeping downwards. When tracking outdoor activities, it still delivers up to 38 hours of continuous, high-accuracy dual-band GPS (which connects to six satellite systems). This endurance sets it apart and makes it ideal for multi-day treks or ultra-races.

The main trade-off is the software. It runs on Amazfit's proprietary Zepp OS. While Zepp OS is smooth, fast, and feature-rich for health and fitness tracking, it operates on a closed ecosystem. This means there are no major third-party apps, including Spotify, Google Maps, or Strava. There's a lot to commend the T-Rex 3 Pro, but this lack of integration is its most egregious downside.

(Image credit: Future / Paul Hatton)

Amazfit T-Rex 3 Pro: Price and availability

$399 USD / £399 UK / $600 AUS
Incredibly affordable given its rugged qualities
Cellular connectivity will require upgrading to a more expensive smartwatch

At sub-$400 / £400 / $600 AUS, the T-Rex 3 Pro is an incredibly affordable alternative to the more expensive Garmin Fenix 8 and Apple Watch Ultra 3 (the Ultra 3 costs $799 in the US, so the T-Rex 3 Pro is fully half the price). It’s missing a number of features, including ECG support, crash detection, third-party apps and other integrations. If you’re not concerned about this, then the T-Rex 3 Pro delivers an awful lot of smartwatch for not a lot of money.

Value score 5/5

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