Amazfit T-Rex smartwatches are ruggedly built for athletes who move beyond typical training.

T-Rex Smartwatches FAQ:


Is a paid subscription required for Amazfit T-Rex smartwatches?

No, Amazfit T-Rex smartwatches do not require a paid subscription.

Are Amazfit T-Rex smartwatches built differently to be an outdoor watch?

Yes, Amazfit T-Rex Ultra 2, T-Rex 3 Pro, and T-Rex 3 are designed to be reliable ultra rugged watches built with the intense demands the outdoors in mind.

Which Amazfit T-Rex smartwatches have a built-in flashlight?

The Amazfit T-Rex Ultra 2 and T-Rex 3 Pro both feature a bright built-in LED flashlight to be used both as a safety tool and convince feature.

Are Amazfit T-Rex smartwatches compatible with iPhone and Android?

Yes, Amazfit T-Rex smartwatches are compatible with both iOS and Android devices.

Can Amazfit T-Rex smartwatches help improve sleep quality?

Yes, Amazfit T-Rex smartwatches measure sleep quality and also overall health monitoring, including:

  • Heart rate
  • Blood oxygen (SpO₂)
  • Stress level
  • Sleep quality
  • Sleep heart rate variability
  • Sleep stages (and REM)
  • Daytime naps
  • Sleep bedtime and wakeup times
  • Sleep breathing quality

Which Amazfit T-Rex smartwatches have GPS?

All of the Amazfit T-Rex Ultra 2, T-Rex 3 Pro and T-Rex 3 have powerful GPS with six-satellite positioning technology to accurately track any outdoor activity in the toughest of terrain. T-Rex GPS can be used to navigate new routes, or review routes take while running, walking, cycling, or hiking.

Can I make and receive phone calls from an Amazfit T-Rex smartwatch?

Yes, Amazfit T-Rex Ultra 2 and T-Rex 3 Pro support Bluetooth calls and texts.

Can I run without my phone and still use maps and route tracking with the Amazfit T Rex?

Yes, with highly accurate six-satellite GPS positioning and free downloadable offline maps, T-Rex smartwatches provide phone-free route navigation.

Are the Amazfit T-Rex smartwatches waterproof?

Yes, the T-Rex Ultra 2, T-Rex 3 Pro and T-Rex 3 are water-resistant to 10 ATM, meaning it can withstand water pressure up to 328 feet deep (100 meters) for up to 10 minutes.

Why doesn't the T-Rex series smartwatch package include a USB-C cable?

Many users already have an extra unused USB-C cable. Amazfit is committed to sustainability to minimize environmental impact and waste reduction. If you do not have one, please reach out to our Customer Support at support.na@amazfit.com

Who is Amazfit?

Amazfit is a leader in smartwatch technology with over 10M users globally. Amazfit is the official wearable partner of HYROX, and sponsors elite athletes like running back Derrick Henry, gold medalist Gabby Thomas, adventure photographer Chris Burkard, and many more.

Trusted By Top Athletes


  • Chris Burkard

    Director & Photographer

    Device: T-Rex Ultra 2

    Learn More
  • Derrick Henry

    All-Pro Running Back

    Device: T-Rex 3

    Learn More
  • Hunter McIntyre

    3x HYROX Champion

    Device: T-Rex 3 Pro

    Learn More
  • Ruth Croft

    Pro Ultra Trail Runner

    Device: T-Rex 3

    Learn More

Customers Are Saying


  • T-Rex Ultra 2

    "The best watch I've ever had – the features and battery life are amazing!"
    -Serge L.

  • T-Rex 3 Pro Main Image

    T-Rex 3 Pro (44mm)

    "Easy to keep track of your progress and helps you develope a plan for your fitness goals."

    -Joshua J.

  • T-Rex 3 Pro Main Image

    T-Rex 3 Pro (48mm)

    "Great build quality, awesome features and amazing battery life. Reasonably priced. Highly recommend."

    -Madhusudhan E.

  • T-Rex 3

    "I have owned Apple Watch, Fitbit and Garmin watches and find this one right up there with more expensive watches. I honestly have no negatives to say about this watch."

    -David L.

Pay with HSA/FSA Savings

Simply follow these steps at checkout to use your FSA or HSA card:

1. Checkout as guest. Close the pop-up to confirm your identity if prompted.

2. For payment method, choose "Truemed - Pay with HSA/FSA". Truemed is also available under "Alternative Payment Methods"

Compare T-Rex Smartwatches

From training to expeditions, compare T-Rex models and find the right companion for your challenge.

T-Rex Ultra 2
T-Rex Ultra 2
T-Rex 3 Pro 48mm
T-Rex 3 Pro 48mm
T-Rex 3 Pro 44mm
T-Rex 3 Pro 44mm
T-Rex 3
T-Rex 3
Display 1.5" AMOLED 1.5" AMOLED 1.32" AMOLED 1.5" AMOLED
Screen Material Sapphire Glass Sapphire Glass Sapphire Glass Corning® Gorilla® Glass
Peak Brightness 3000 nits 3000 nits 3000 nits 2000 nits
Bezel & Buttons Grade 5 Titanium Grade 5 Titanium Grade 5 Titanium Stainless Steel
Dimensions 51 × 51 × 14.3mm 48 × 48 × 14mm 44.8 × 44.8 × 13.2mm 48.5 × 48.5 × 13.75mm
Strap Attachment 26mm
Quick Release
22mm
Quick Release
22mm
Quick Release
22mm
Special Tool
Flashlight
Audio Microphone and Speaker Microphone and Speaker Microphone and Speaker Microphone
Bluetooth Calls
Workout Modes 180+ 180+ 180+ 170+
Water Resistance 10 ATM
45m Freediving
10 ATM
45m Freediving
10 ATM
45m Freediving
10 ATM
45m Freediving
Typical Battery Life Up to 30 Days Up to 25 Days Up to 17 Days Up to 27 Days
Accurate GPS Mode Up to 50 Hours Up to 38 Hours Up to 26 Hours Up to 42 Hours

The Amazfit T-Rex smartwatches are rugged GPS smartwatches for every kind of your outdoor activity, from intense fitness workouts to outdoor hikers and trail runners, to endurance athletes and extreme explorers, T-Rex has the durability and reliability you require.

Amazfit T-Rex 3

Amazfit T-Rex 3 is the ideal smartwatch for those entering the world of outdoor sports and adventure activities. Designed for hikers, rugged fitness, trail runners, backpackers, and hybrid environment fitness enthusiasts, it combines rugged durability with powerful navigation and exercise training features.

With powerful and accurate dual-band GPS, downloadable maps, voice control, AI coaching, over 170 sports modes, advanced health tracking, and more than three weeks of battery life, T-Rex 3 helps outdoor enthusiasts confidently explore trails, track workouts, and build healthy habits. Its military-grade durability, 2,000-nit AMOLED display, and extreme temperature resistance make it a dependable companion for hiking, trekking, camping, walking, cycling, and everyday fitness activities.

Best for: Outdoor adventurers, hikers, casual campers, fitness enthusiasts, trail runners, and users looking for a rugged GPS smartwatch with additional value and features for recovery, sleep, and health.

Amazfit T-Rex 3 Pro

The Amazfit T-Rex 3 Pro is available in two face sizes 44mm & 48mm to fit your personal needs. T-Rex 3 Pro is built for users ready to take their outdoor performance and fitness to the next level. Combining premium materials, advanced navigation tools, recreational diving support, route planning, Bluetooth calling, and over 180 sport modes, it is designed for athletes who demand more from their equipment.

The 48mm version is best for larger wrists and users seeking maximum screen size visibility and battery life. The 44mm version offers the same features with a slightly more compact face size for smaller wrists.

Featuring sapphire glass protection, a Grade 5 titanium bezel and buttons, six-satellite positioning, offline maps, POI search, and a built-in two-color LED flashlight, T-Rex 3 Pro is optimized for long-distance hiking, trail running, endurance racing, rucking, mountain adventures, recreational diving, and structured training programs.

Best for: Experienced hikers, trail runners, endurance athletes, multisport athletes, outdoor enthusiasts, recreational divers, and users seeking a premium rugged smartwatch for advanced training and exploration.

Amazfit T-Rex Ultra 2

The Amazfit T-Rex Ultra 2 is the flagship model in the T-Rex lineup, built for those who embrace outdoor uncertainty and refuse to be limited by where the day may lead. Whether you're navigating urban streets, hiking remote trails, fitness training in the wild outdoors, exploring underwater, or embarking on a multi-day adventure, T-Rex Ultra 2 is designed to adapt to changing environments without missing a beat.

Crafted with a full Grade 5 titanium bottom, bezel, and buttons, and protected by sapphire glass, it delivers exceptional durability for whatever challenges arise. Its vibrant 1.5-inch AMOLED display reaches up to 3,000 nits of peak brightness, ensuring excellent visibility whether you're under intense sunlight, in low-light conditions, or checking your route at night.

With dual-band GPS and six satellite positioning systems, full-color preloaded maps, turn-by-turn navigation, POI search, and downloadable contour maps, T-Rex Ultra 2 helps you stay confidently on course wherever your journey takes you. A built-in two-color LED flashlight, dual diving certifications, 10 ATM water resistance, and up to 30 days of battery life make it ready for unexpected moments, changing plans, and adventures without limits.

Best for: Explorers, multi-day adventure travelers, outdoor enthusiasts, endurance athletes, divers, or anyone seeking the most capable and versatile and rugged GPS smartwatch in the Amazfit lineup.