OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
Scored using Smartwatches Methodology v3.0
Smartwatches Methodology v3.0
Mathematical & Unbiased Scoring
Products in this category are scored under Frontum Smartwatches Methodology v3.0: the technical score from the specifications is the base, and independent expert and video reviews (up to ±0.5 points), owner opinions (up to ±0.3) and best-of lists (up to +0.3) move it up or down.
Explore Smartwatches Methodology v3.0

Amazfit T-Rex Ultra 2 review: 127 specs compared

Avg. price:~£?Screen size:1.5 inchBattery life:30 daysDisplay type:AMOLED

Amazfit T-Rex Ultra 2 Review: Compare 127 technical specifications, 29 expert and video reviews and 4 best-of lists to see how this product ranks in the Smartwatches category and whether it is worth buying.

Amazfit T-Rex Ultra 2
8.3/10

Overall score

Score
8.3/ 10
✕
What it is
Our main score for this model, 1–10. It combines specs, best-of lists, expert reviews and owners.
How we count it
Parts: Technical score 35%, List score 30%, Reviews score 25%, Sentiment score 10%
Marks: Each part gets a mark out of 10. For reviews, lists and owners, a typical model in this category gets about 8 and the best one gets 10.
No data yet: A part with no data shows "?". It counts as the mark of a weaker model in this category (4 in 5 models with data score higher). This way, models with reviews, lists and owners usually come out ahead.
Score distribution
▼
<55-66-77-88-99-10
★ Better than 91% of models
Score components

35%

8.2

Technical score

30%

8.3

List score

25%

8.1

Reviews score

10%

8.6

Sentiment score

★Better than 91% of smartwatches
?

Value for money

Value for money
✕
What it is
An indicator that combines the smartwatch's overall rating with its cost.
When it matters
When you are looking for a smartwatch with a good balance between quality and price.
Score distribution
▼
<55-66-77-88-99-10
Score components

70%

8.3

Overall score

30%

?

Price

Price not known yet
8.2

Technical score

Technical score
8.2/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 35% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
▲ Better than 89% of models
Score components

24%

7.7

Health

21%

10

Fitness

16%

7.5

Battery

14%

7.2

Smart features

12%

8.3

Connectivity

9%

8.2

Display & Design

4%

8.0

Hardware

▲Better than 89%
8.1

Reviews score

Reviews score
8.1/ 10
✕
What it is
Average grade from independent test sites, magazines and video reviewers, 1–10.
How we count it
Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Every review counts the same: written or video, short or full test.
Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.5 for now.
Share: Reviews count 25% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
▲ Better than 60% of models

80%

8.0

Average grade

20%

8.7

Popularity

Grades by review (29)
10 reviews + 19 videos, average 8.0/10. Reviews count 25% of the overall score.
User ratings collected online are not part of this score.
▲Better than 60%
8.3

List score

List score
8.3/ 10
✕
What it is
How often independent test sites, magazines and video reviewers put this model in their best-of lists for this category.
How we count it
Points: The model in the most lists of this category gets 10; the others get 8 to 10 in proportion. In no list yet: 7.5. Lists count 30% of the overall score.
Enough data: Every list counts, even a single one. With fewer than 5 best-of lists in the category, this part is left out.
Lists with this model (4)
List score: in 4 of 82 lists (5%)
▲Better than 89%
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Best prices
*As an Amazon Associate, we earn from qualifying purchases.
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
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Smartwatches model ranking

Ranked #71 of 777 models in Smartwatches (Overall score)

Technical Specifications of smartwatch Amazfit T-Rex Ultra 2

Technical score
Technical score
8.2/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 35% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
▲ Better than 89% of models
Score components:

24%

7.7

Health

21%

10

Fitness

16%

7.5

Battery

14%

7.2

Smart features

12%

8.3

Connectivity

9%

8.2

Display & Design

4%

8.0

Hardware

8.2
Reviews score
8.1
List score
8.3
Value for money
Value for money
8.8/ 10
✕
What it is
An indicator that combines the smartwatch's overall rating with its cost.
When it matters
When you are looking for a smartwatch with a good balance between quality and price.
Score distribution
▼
<55-66-77-88-99-10
★ Better than 94% of models
Score components:

70%

8.3

Overall score

30%

?

Price

8.8
Heart rate monitor
yes
This smartwatch includes a heart rate monitor. 9.5% of smartwatches include a heart rate monitor.
Blood oxygen monitoring
yes
This smartwatch supports blood oxygen monitoring. 30.4% of smartwatches support blood oxygen monitoring.
ECG
no
This smartwatch does not support ECG. 18% of smartwatches support ECG.
Irregular heart rate warnings
?
HRV tracking
yes
This smartwatch supports HRV tracking. 54.9% of smartwatches support HRV tracking.
Show more
Accelerometer
yes
This smartwatch includes an accelerometer. 0.5% of smartwatches include an accelerometer.
Barometer
yes
This smartwatch includes a barometer. 46.5% of smartwatches include a barometer.
Gyroscope
yes
This smartwatch includes a gyroscope. 28.9% of smartwatches include a gyroscope.
Cadence sensor
yes
This smartwatch includes a cadence sensor. 67.2% of smartwatches include a cadence sensor.
Distance tracking
yes
This smartwatch supports distance tracking. 3.7% of smartwatches support distance tracking.
Show more
What reviewers say
Battery life
30 days
Market range: <1 days – >16 days
This smartwatch lasts 30 days on a charge, which is longer than 95.9% of Smartwatches and the same as 1% of Smartwatches.
Battery life in training mode
?
Battery life with GPS on
50 h
Market range: <5.75 h – >43 h
This smartwatch lasts 50 h with GPS on, which is longer than 92.4% of Smartwatches and the same as 2.1% of Smartwatches.
Battery power
870 mAh
Market range: <195 mAh – >475 mAh
This smartwatch has a 870 mAh battery, which is larger than 99.9% of Smartwatches.
Charge time
150 min
Market range: <60 min – >150 min
This smartwatch charges from empty in 150 min, which is slower than 88.4% of Smartwatches and the same as 7.4% of Smartwatches.
Show more
What reviewers say
Operating system
Zepp OS
This smartwatch runs Zepp OS, which is more advanced than the system in 58.9% of Smartwatches and equal to 7% of Smartwatches.
Software update frequency
?
Third-party app support
yes
This smartwatch supports third-party apps. 48.5% of smartwatches support third-party apps.
Notifications
yes
This smartwatch supports notifications. 0.3% of smartwatches support notifications.
Voice assistant support
yes
This smartwatch supports voice assistants. 30.8% of smartwatches support voice assistants.
Show more
What reviewers say
Cellular module
no
This smartwatch does not include a cellular module. 16.6% of smartwatches include a cellular module.
SIM cards
0
GPS
yes
This smartwatch supports GPS. 40.3% of smartwatches support GPS.
Galileo support
yes
This smartwatch supports Galileo navigation. 56.5% of smartwatches support Galileo navigation.
Dual-frequency GPS
yes
Amazfit T-Rex Ultra 2 supports dual-frequency GPS. 85% of Smartwatches offer this.
Show more
What reviewers say
Screen size
1.5 inch
Market range: <1.2 inch – >1.82 inch
This smartwatch has a 1.5 inch screen, which is larger than 66.8% of Smartwatches and the same as 4.1% of Smartwatches.
Display type
AMOLED
This smartwatch uses AMOLED, which is more advanced than the screen in 46.9% of Smartwatches and equal to 53.1% of Smartwatches.
Resolution
480x 480
This smartwatch has a display resolution of 480x480 which is higher than that of 98% of smartwatches and equal to that of 1.9% of smartwatches.
Pixel density
322 ppi
Market range: <207 ppi – >461 ppi
This smartwatch has a pixel density of 322 ppi, which is lower than 58.3% of Smartwatches and equal to 1.4% of Smartwatches.
Display brightness
3,000 nits
Market range: <450 nits – >2k nits
This smartwatch has a screen brightness of 3,000 nits, which is higher than 93.2% of Smartwatches and equal to 6.3% of Smartwatches.
Show more
What reviewers say
CPU speed
?
Processor model
?
RAM
?
Internal storage
64 GB
Market range: <0 GB – >32 GB
This smartwatch has 64 GB of internal storage, which is more than 96.5% of Smartwatches and equal to 3.5% of Smartwatches.
External memory slot
no
This smartwatch does not include an external memory slot. 0.3% of smartwatches include an external memory slot.
Show more

Amazfit T-Rex Ultra 2 vs the average smartwatch

246810TotalHealthFitnessBatteryConnectivityDisplay & DesignSmart featuresHardware
  • 23 days longer battery life
    This smartwatch runs longer per charge than the average smartwatch (30 days vs 7 days). The average smartwatch runs for 7 days on a charge.
    30 days vs 7 days
  • 29 h longer GPS battery life
    This smartwatch lasts longer with GPS on than the average smartwatch (50 h vs 21 h). The average smartwatch lasts 21 h with GPS on.
    50 h vs 21 h
  • Temperature sensing
    This smartwatch includes a temperature sensor, the average smartwatch does not. 31.9% of smartwatches include a temperature sensor.
  • HRV tracking
    This smartwatch supports HRV tracking, the average smartwatch does not. 45.2% of smartwatches support HRV tracking.
  • Stronger display glass
    This smartwatch uses sapphire display glass, while the average smartwatch uses mineral glass.
    sapphire vs mineral glass
  • Maps support
    This smartwatch supports maps, the average smartwatch does not. 34.4% of smartwatches support maps.
  • 2,250 nits brighter screen
    This smartwatch has a brighter screen than the average smartwatch (3000 nits vs 750 nits). The average smartwatch peaks at 750 nits.
    3,000 nits vs 750 nits
  • NFC functionality
    This smartwatch supports NFC, the average smartwatch does not. 45.6% of smartwatches support NFC.
  • 15.7% higher review score
    Reviews score
    8.1/ 10
    ✕
    What it is
    Average grade from independent test sites, magazines and video reviewers, 1–10.
    How we count it
    Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Every review counts the same: written or video, short or full test.
    Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
    Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.5 for now.
    Share: Reviews count 25% of the overall score.
    Score distribution
    ▼
    <55-66-77-88-99-10
    ▲ Better than 60% of models

    80%

    8.0

    Average grade

    20%

    8.7

    Popularity

    Grades by review (29)
    10 reviews + 19 videos, average 8.0/10. Reviews count 25% of the overall score.
    User ratings collected online are not part of this score.
    8.1 vs 7.0
  • 13% better value for money
    Amazfit T-Rex Ultra 2 has a higher value-for-money score than the average smartwatch (8.78 vs 7.8).
    8.78 vs 7.76
  • 5.1% higher list score
    List score
    8.3/ 10
    ✕
    What it is
    How often independent test sites, magazines and video reviewers put this model in their best-of lists for this category.
    How we count it
    Points: The model in the most lists of this category gets 10; the others get 8 to 10 in proportion. In no list yet: 7.5. Lists count 30% of the overall score.
    Enough data: Every list counts, even a single one. With fewer than 5 best-of lists in the category, this part is left out.
    Lists with this model (4)
    List score: in 4 of 82 lists (5%)
    8.3 vs 7.9
  • 14.7% higher sentiment score
    8.6 vs 7.5
  • Temperature sensing
    This smartwatch includes a temperature sensor, the average smartwatch does not. 31.9% of smartwatches include a temperature sensor.
  • HRV tracking
    This smartwatch supports HRV tracking, the average smartwatch does not. 45.2% of smartwatches support HRV tracking.
  • 5 years newer
    This smartwatch was released more recently than the average smartwatch (2026 vs 2021). The average smartwatch was released in 2021.
    2,026 vs 2,021
  • External heart rate monitor support
    This smartwatch supports external heart rate monitor compatibility, the average smartwatch does not. 46.6% of smartwatches support external heart rate monitor compatibility.
  • Cadence tracking
    This smartwatch includes a cadence sensor, the average smartwatch does not. 32.9% of smartwatches include a cadence sensor.
  • 90 more exercise types
    This smartwatch includes more exercise types than the average smartwatch (180 vs 90). The average smartwatch includes 90 exercise types.
    180 vs 90
  • 23 days longer battery life
    This smartwatch runs longer per charge than the average smartwatch (30 days vs 7 days). The average smartwatch runs for 7 days on a charge.
    30 days vs 7 days
  • 29 h longer GPS battery life
    This smartwatch lasts longer with GPS on than the average smartwatch (50 h vs 21 h). The average smartwatch lasts 21 h with GPS on.
    50 h vs 21 h
  • 565 mAh larger battery capacity
    This smartwatch has a larger battery than the average smartwatch (870 mAh vs 305 mAh). The average smartwatch has a 305 mAh battery.
    870 mAh vs 305 mAh
  • Maps support
    This smartwatch supports maps, the average smartwatch does not. 34.4% of smartwatches support maps.
  • NFC functionality
    This smartwatch supports NFC, the average smartwatch does not. 45.6% of smartwatches support NFC.
  • Supports Wi-Fi
    This smartwatch supports Wi-Fi, the average smartwatch does not. 43.5% of smartwatches support Wi-Fi.
  • Supports dual-frequency GPS
    Amazfit T-Rex Ultra 2 supports dual-frequency GPS, while the average smartwatch does not. 15.1% of Smartwatches support dual-frequency GPS.
  • Galileo satellite support
    This smartwatch supports Galileo navigation, the average smartwatch does not. 43.6% of smartwatches support Galileo navigation.
  • More current Bluetooth version
    This smartwatch uses a more current Bluetooth version than the average smartwatch (5.2 vs 5).
    5.2 vs 5.0
  • Stronger display glass
    This smartwatch uses sapphire display glass, while the average smartwatch uses mineral glass.
    sapphire vs mineral glass
  • 2,250 nits brighter screen
    This smartwatch has a brighter screen than the average smartwatch (3000 nits vs 750 nits). The average smartwatch peaks at 750 nits.
    3,000 nits vs 750 nits
  • Rugged construction
    This smartwatch has a rugged design, the average smartwatch does not. 41.3% of smartwatches have a rugged design.
  • Better case material
    This smartwatch uses titanium, fiber-reinforced polymer for the case material, while the average smartwatch uses polycarbonate.
    titanium, fiber-reinforced polymer vs polycarbonate
  • 50 m deeper water rating
    This smartwatch is rated for deeper water than the average smartwatch (100 m vs 50 m). The average smartwatch is rated to 50 m.
    100 m vs 50 m
  • Higher resolution
    This smartwatch has a display resolution of 480x480, while the average smartwatch reaches 360x360.
    480x480 vs 360x360
  • 0.1 inch larger display
    This smartwatch has a larger screen than the average smartwatch (1.5 inch vs 1.4 inch). The average smartwatch has a 1.4 inch screen.
    1.5 inch vs 1.4 inch
  • More advanced operating system
    This smartwatch runs a more advanced operating system than the average smartwatch (Zepp OS vs Proprietary OS).
    Zepp OS vs Proprietary OS
  • 16x more internal storage
    This smartwatch has more internal storage than the average smartwatch (64 GB vs 4 GB). The average smartwatch has 4 GB of internal storage.
    64 GB vs 4 GB
  • 44.2 g heavier
    This smartwatch is heavier than the average smartwatch (89.2 g vs 45 g). The average smartwatch weighs 45.0 g.
    89.2 g vs 45.0 g
  • 2.6 mm thicker
    This smartwatch is thicker than the average smartwatch (14.3 mm vs 11.7 mm). The average smartwatch is 11.7 mm thick.
    14.3 mm vs 11.7 mm
  • 30 min slower charging
    This smartwatch charges more slowly than the average smartwatch (150 min vs 120 min). The average smartwatch takes 120 min to charge from empty.
    150 min vs 120 min
  • 6 mm taller case
    This smartwatch has a taller case than the average smartwatch (51 mm vs 45 mm). The average smartwatch is 45.0 mm tall.
    51 mm vs 45.0 mm
  • 8.5 mm wider case
    This smartwatch has a wider case than the average smartwatch (51 mm vs 42.5 mm). The average smartwatch measures 42.5 mm across.
    51 mm vs 42.5 mm
  • 4 mm wider strap
    This smartwatch has a wider strap than the average smartwatch (26 mm vs 22 mm). The average smartwatch has a 22 mm strap.
    26 mm vs 22 mm
  • 30 min slower charging
    This smartwatch charges more slowly than the average smartwatch (150 min vs 120 min). The average smartwatch takes 120 min to charge from empty.
    150 min vs 120 min
  • 44.2 g heavier
    This smartwatch is heavier than the average smartwatch (89.2 g vs 45 g). The average smartwatch weighs 45.0 g.
    89.2 g vs 45.0 g
  • 2.6 mm thicker
    This smartwatch is thicker than the average smartwatch (14.3 mm vs 11.7 mm). The average smartwatch is 11.7 mm thick.
    14.3 mm vs 11.7 mm
  • 6 mm taller case
    This smartwatch has a taller case than the average smartwatch (51 mm vs 45 mm). The average smartwatch is 45.0 mm tall.
    51 mm vs 45.0 mm
  • 8.5 mm wider case
    This smartwatch has a wider case than the average smartwatch (51 mm vs 42.5 mm). The average smartwatch measures 42.5 mm across.
    51 mm vs 42.5 mm
  • 4 mm wider strap
    This smartwatch has a wider strap than the average smartwatch (26 mm vs 22 mm). The average smartwatch has a 22 mm strap.
    26 mm vs 22 mm

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

8.0
Fred's Reviews58
≈ estimated
29/09/2026
Hands-on review · features, maps and app tests
Verdict
Amazfit T-Rex Ultra 2 is a very good watch with strong maps and design, but it lacks US payments and has limited iPhone features.
8.0
The Gray Dog
≈ estimated
15/07/2026
Retest · heart rate accuracy against chest strap
Verdict
Amazfit T-Rex Ultra 2's heart rate sensor is now good for cardio, but lifting still needs a chest strap.
7.0
Isa Marcial
≈ estimated
26/04/2026
Hands-on review · feature walkthrough and app tests
Verdict
Amazfit T-Rex Ultra 2 is fairly complete but very expensive, and it lacks mobile payment support in Mexico.
8.0
Fit Dad Fabio
≈ estimated
18/04/2026
Long-term review · 2 months of daily use
Verdict
Amazfit T-Rex Ultra 2 is a heavy, large titanium watch that suits adventurous users, but not small wrists or running-only use.
8.0
The Gray Dog
≈ estimated
24/03/2026
Hands-on review · workouts, battery and Garmin comparison
Verdict
Amazfit T-Rex Ultra 2 is very good in many areas, best for buyers who want outdoor features and will use an external heart strap.
9.0
The Product Reviewer
≈ estimated
04/03/2026
Hands-on review · several days of daily and outdoor use
Verdict
Amazfit T-Rex Ultra 2 is a rugged, premium outdoor watch and a serious contender, despite gaps in music, NFC and heart rate accuracy.
9.0
Fredy Us
≈ estimated
20/02/2026
Hands-on review · daily use, GPS and phone features
Verdict
Amazfit T-Rex Ultra 2 is a rugged premium watch built for extreme durability, but it is very large for sleep tracking.
8.0
Chase the Summit
≈ estimated
19/02/2026
Hands-on review · several weeks of everyday use
Verdict
Amazfit T-Rex Ultra 2 is a capable, feature-packed watch worth considering at its price, though music streaming is missing.
9.0
Shervin Shares Reviews
≈ estimated
19/02/2026
Week-long test · runs compared with Apple and Garmin watches
Verdict
Amazfit T-Rex Ultra 2 is a cheaper alternative to Garmin with solid GPS and heart rate, but it has fewer smartwatch features.
8.0
The Quantified Scientist
≈ estimated
19/02/2026
Hands-on test · heart rate, sleep and GPS tracking
Verdict
Amazfit T-Rex Ultra 2 has strong GPS and outdoor performance, but its size makes it a poor fit for runners and cyclists.
8.0
Fit Dad Fabio
≈ estimated
03/04/2026
Unboxing · first impressions of build, apps and features
Verdict
Amazfit T-Rex Ultra 2 feels high quality and good value so far, but a final verdict needs a run test.
7.0
Lim Reviews
≈ estimated
25/02/2026
First look · unboxing and first impressions
Verdict
Amazfit T-Rex Ultra 2 is worth considering for its features at this price, but tracking accuracy is not tested here, so see other reviews.
More graded video reviews (1)
creator’s own scoreestimated by us

What reviewers agree on

Based on 10 · 12

Reviewers love the outstanding battery life and bright display, but almost all find it too bulky and the software disappointing.
Praised
Mixed views
Criticised
Pick a topic to see who said what

Expert reviews

In-depth analysis and verdict from leading tech publications

8.0
trustedreviews.com
≈ estimated
28/07/2026
Hands-on test · Adventure smartwatch
Verdict
The Amazfit T-Rex Ultra 2 packs many outdoor features and a bright flashlight into a bulky frame, best for adventurers who don't mind its size.
7.0
wareable.com
≈ estimated
15/06/2026
Hands-on test · Hiking watch
Verdict
The Amazfit T-Rex Ultra 2 is a long-lasting hiking watch with better maps and a flashlight, but it is very large and its route features don't always work.
8.0
notebookcheck.net
≈ estimated
27/05/2026
Lab test · Expedition smartwatch
Verdict
The Amazfit T-Rex Ultra 2 suits expeditions with long battery life and a useful flashlight, though its large case can slip during sport.
8.0
inside-digital.de
≈ estimated
02/08/2026
Hands-on test · Outdoor smartwatch
Verdict
The Amazfit T-Rex Ultra 2 is a tough, bright outdoor watch with offline maps and steady GPS, but its heavy case and optical heart rate make it weaker for training.
6.9
ceinture-cardio.com
✓ explicit
04/10/2026
Triathlete test · Outdoor GPS watch
Verdict
The Amazfit T-Rex Ultra 2 is a long-lasting, accurate GPS outdoor watch, but at 89g with a weak heart-rate sensor it is a weaker pick for triathletes.
7.5
runmorph.com
✓ explicit
14/07/2026
Running test · Trail GPS watch
Verdict
The Amazfit T-Rex Ultra 2 is a tough titanium trail watch with long GPS battery life and offline maps, but its training analysis is shallower than Garmin Connect's.
9.0
fanaticosdelhardware.com
≈ estimated
30/04/2026
Hands-on review · Outdoor smartwatch
Verdict
The Amazfit T-Rex Ultra 2 suits adventurers with long battery life and 50 hours of high-precision GPS, though its large case and few apps hold it back.
8.0
therunningclub.it
≈ estimated
20/07/2026
Hands-on test · Running and outdoor watch
Verdict
The Amazfit T-Rex Ultra 2 tracks GPS and altitude much like a Garmin Forerunner 970, but its heart rate readings were less accurate during runs.
8.0
notebookcheck.it
≈ estimated
28/05/2026
Hands-on test · Rugged outdoor watch
Verdict
The Amazfit T-Rex Ultra 2 is built for expeditions, with long battery life and satellite lock in extreme cold, but its large case and limited apps hold it back.
8.0
notebookcheck.nl
≈ estimated
28/05/2026
Lab test · Rugged outdoor watch
Verdict
The Amazfit T-Rex Ultra 2 is a bright, long-lasting watch that works down to -30 °C, though its bulky case and few apps make it harder to wear every day.

Third-party reviews

What we like about Amazfit T-Rex Ultra 2

  • The battery is rated for 30 days of use.
  • With GPS on, the battery lasts 50 h.
  • The screen reaches 3000 nits and is easy to read in strong sun, even with gloves.
  • Offline topographic maps need no subscription.
  • Dual-frequency GPS holds steady under trees and between buildings.
  • It works down to -30 °C.

What we don't like about Amazfit T-Rex Ultra 2

  • At 89.2 g it is heavy, and the case moves on the wrist with every stride.
  • At 51 mm wide and 14.3 mm thick, it is oversized on slim wrists.
  • Heart rate readings lag during short hard efforts.
  • A full charge takes 150 min.
  • The app selection is limited, so add-ons are few.

Verdict

Multi-day hikes and long trail runs with no charger nearby are what the Amazfit T-Rex Ultra 2 is made for. The battery is rated for 30 days, and with GPS on it lasts 50 h, so one charge covers a long trip. The screen reaches 3000 nits, so it stays readable in full sun, and the 180 sports modes cover most training. Offline topographic maps with turn-by-turn directions need no subscription, and the dual-frequency GPS keeps a steady track on trails. Weight is the trade-off: at 89.2 g the case moves on the wrist with every stride, and it is 14.3 mm thick. It suits a serious endurance athlete or hiker who wants a big bright screen and a battery that lasts weeks, not days.

Compare Amazfit T-Rex Ultra 2 with other Smartwatches

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Graphic comparison of Amazfit T-Rex Ultra 2 and other Smartwatches

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