Garmin Fenix 8 might be cheap, but this rival offers the same features and costs less than half as much – and it even won the T3 Awards 2025

Amazfit T-Rex 3 watch renders on coloured background — (Image credit: Amazfit)

This Amazon Prime Day(s) is a real treat for smartwatch fans. We've seen plenty of Garmin deals, including the cheapest-ever Fenix 8 offer, but if you can't quite stretch your budget that much, I have an excellent alternative for you.

Shop all smartwatch deals on Amazon's Prime Day Sale

The Amazfit T-Rex 3 is currently under £200 and offers features similar to the Garmin, including long battery life, dual-band GNSS, offline Topo maps, an AMOLED screen, NFC payments, and 170 sports modes.

The Amazfit T-Rex 3 is one of the best-value outdoor smartwatches you can buy, especially at this price. It earned a T3 Award in 2025 for good reason, combining premium outdoor features with a price tag that undercuts much of the competition.

Built to military-grade durability standards, the T-Rex 3 is designed for hiking, trail running, climbing and pretty much any outdoor adventure you can throw at it. Its bright 1.5-inch AMOLED display reaches up to 2,000 nits, making it easy to read even in direct sunlight, and it boasts a stainless steel bezel and robust construction.

You get dual-band GPS with support for six satellite systems, downloadable Topo maps with turn-by-turn navigation, advanced training metrics, offline route guidance, and health tracking covering heart rate, blood oxygen, sleep and stress.

Zepp Pay brings contactless payments, and the watch can even store music for phone-free workouts. Battery life is excellent, lasting up to 27 days in typical smartwatch mode or around 42 hours with GPS tracking enabled.

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Matt Kollat is a journalist and content creator for T3.com and T3 Magazine, where he works as Active Editor. His areas of expertise include wearables, drones, action cameras, fitness equipment, nutrition and outdoor gear. He joined T3 in 2019.

His work has also appeared on TechRadar and Fit&Well, and he has collaborated with creators such as Garage Gym Reviews. Matt has served as a judge for multiple industry awards, including the ESSNAwards. When he isn’t running, cycling or testing new kit, he’s usually roaming the countryside with a camera or experimenting with new audio and video gear.