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 3 review: 127 specs compared

Avg. price:~£?Screen size:1.5 inchBattery life:27 daysDisplay type:AMOLED

Amazfit T-Rex 3 Review: Compare 127 technical specifications, 51 expert and video reviews and 8 best-of lists to see how this product ranks in the Smartwatches category and whether it is worth buying.

Amazfit T-Rex 3
8.5/10

Overall score

Score
8.5/ 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 96% of models
Score components

35%

8.1

Technical score

30%

8.4

List score

25%

8.8

Reviews score

10%

10

Sentiment score

★Better than 96% 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%

8.5

Overall score

30%

?

Price

Price not known yet
8.1

Technical score

Technical score
8.1/ 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 86% of models
Score components

24%

7.8

Health

21%

10

Fitness

16%

7.5

Battery

14%

7.1

Smart features

12%

8.2

Connectivity

9%

8.3

Display & Design

4%

5.1

Hardware

▲Better than 86%
8.8

Reviews score

Reviews score
8.8/ 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 99% of models

80%

8.6

Average grade

20%

9.4

Popularity

Grades by review (51)
6 reviews + 45 videos, average 8.7/10. Reviews count 25% of the overall score.
User ratings collected online are not part of this score.
★Better than 99%
8.4

List score

List score
8.4/ 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 (8)
List score: in 8 of 119 lists (7%)
★Better than 93%
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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 #29 of 777 models in Smartwatches (Overall score)

Technical Specifications of smartwatch Amazfit T-Rex 3

Technical score
Technical score
8.1/ 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 86% of models
Score components:

24%

7.8

Health

21%

10

Fitness

16%

7.5

Battery

14%

7.1

Smart features

12%

8.2

Connectivity

9%

8.3

Display & Design

4%

5.1

Hardware

8.1
Reviews score
8.8
List score
8.4
Value for money
Value for money
9.0/ 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 97% of models
Score components:

70%

8.5

Overall score

30%

?

Price

9.0
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
What reviewers say
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
27 days
Market range: <1 days – >16 days
This smartwatch lasts 27 days on a charge, which is longer than 94.8% of Smartwatches.
Battery life in training mode
?
Battery life with GPS on
42 h
Market range: <5.75 h – >43 h
This smartwatch lasts 42 h with GPS on, which is longer than 87.2% of Smartwatches and the same as 1.8% of Smartwatches.
Battery power
700 mAh
Market range: <195 mAh – >475 mAh
This smartwatch has a 700 mAh battery, which is larger than 98.6% of Smartwatches.
Charge time
180 min
Market range: <60 min – >150 min
This smartwatch charges from empty in 180 min, which is slower than 96% of Smartwatches and the same as 2.3% 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
?
Dual-frequency GPS
yes
Amazfit T-Rex 3 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
2000 nits
Market range: <450 nits – >2k nits
This smartwatch has a screen brightness of 2000 nits, which is higher than 84.9% of Smartwatches and equal to 6.6% of Smartwatches.
Show more
What reviewers say
CPU speed
?
Processor model
?
RAM
?
Internal storage
32 GB
Market range: <0 GB – >32 GB
This smartwatch has 32 GB of internal storage, which is more than 81.3% of Smartwatches and equal to 15% 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
What reviewers say

Amazfit T-Rex 3 vs the average smartwatch

246810TotalHealthFitnessBatteryConnectivityDisplay & DesignSmart featuresHardware
  • 20 days longer battery life
    This smartwatch runs longer per charge than the average smartwatch (27 days vs 7 days). The average smartwatch runs for 7 days on a charge.
    27 days vs 7 days
  • Temperature sensing
    This smartwatch includes a temperature sensor, the average smartwatch does not. 31.9% of smartwatches include a temperature sensor.
  • 21 h longer GPS battery life
    This smartwatch lasts longer with GPS on than the average smartwatch (42 h vs 21 h). The average smartwatch lasts 21 h with GPS on.
    42 h vs 21 h
  • Readiness score
    This smartwatch supports readiness scores, the average smartwatch does not. 19.8% of smartwatches support readiness scores.
  • HRV tracking
    This smartwatch supports HRV tracking, the average smartwatch does not. 45.2% of smartwatches support HRV tracking.
  • 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.
  • 1,250 nits brighter screen
    This smartwatch has a brighter screen than the average smartwatch (2000 nits vs 750 nits). The average smartwatch peaks at 750 nits.
    2,000 nits vs 750 nits
  • 25.7% higher review score
    Reviews score
    8.8/ 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 99% of models

    80%

    8.6

    Average grade

    20%

    9.4

    Popularity

    Grades by review (51)
    6 reviews + 45 videos, average 8.7/10. Reviews count 25% of the overall score.
    User ratings collected online are not part of this score.
    8.8 vs 7.0
  • 33.3% higher sentiment score
    10.0 vs 7.5
  • 6.3% higher list score
    List score
    8.4/ 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 (8)
    List score: in 8 of 119 lists (7%)
    8.4 vs 7.9
  • 15.7% better value for money
    Amazfit T-Rex 3 has a higher value-for-money score than the average smartwatch (8.98 vs 7.8).
    8.98 vs 7.76
  • Temperature sensing
    This smartwatch includes a temperature sensor, the average smartwatch does not. 31.9% of smartwatches include a temperature sensor.
  • Readiness score
    This smartwatch supports readiness scores, the average smartwatch does not. 19.8% of smartwatches support readiness scores.
  • HRV tracking
    This smartwatch supports HRV tracking, the average smartwatch does not. 45.2% of smartwatches support HRV tracking.
  • 3 years newer
    This smartwatch was released more recently than the average smartwatch (2024 vs 2021). The average smartwatch was released in 2021.
    2,024 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.
  • 87 more exercise types
    This smartwatch includes more exercise types than the average smartwatch (177 vs 90). The average smartwatch includes 90 exercise types.
    177 vs 90
  • 20 days longer battery life
    This smartwatch runs longer per charge than the average smartwatch (27 days vs 7 days). The average smartwatch runs for 7 days on a charge.
    27 days vs 7 days
  • 21 h longer GPS battery life
    This smartwatch lasts longer with GPS on than the average smartwatch (42 h vs 21 h). The average smartwatch lasts 21 h with GPS on.
    42 h vs 21 h
  • 395 mAh larger battery capacity
    This smartwatch has a larger battery than the average smartwatch (700 mAh vs 305 mAh). The average smartwatch has a 305 mAh battery.
    700 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 3 supports dual-frequency GPS, while the average smartwatch does not. 15.1% of Smartwatches support dual-frequency GPS.
  • 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
  • 1,250 nits brighter screen
    This smartwatch has a brighter screen than the average smartwatch (2000 nits vs 750 nits). The average smartwatch peaks at 750 nits.
    2,000 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.
  • 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
  • Stronger display glass
    This smartwatch uses Corning Gorilla Glass display glass, while the average smartwatch uses mineral glass.
    Corning Gorilla Glass vs mineral glass
  • Higher resolution
    This smartwatch has a display resolution of 480x480, while the average smartwatch reaches 360x360.
    480x480 vs 360x360
  • 25 °C higher heat tolerance
    This smartwatch tolerates a higher temperature than the average smartwatch (70 °C vs 45 °C). The average smartwatch is rated up to 45.0 °C.
    70 °C vs 45.0 °C
  • 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
  • Better case material
    This smartwatch uses stainless steel, plastic for the case material, while the average smartwatch uses polycarbonate.
    stainless steel, plastic vs polycarbonate
  • 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
  • 8x more internal storage
    This smartwatch has more internal storage than the average smartwatch (32 GB vs 4 GB). The average smartwatch has 4 GB of internal storage.
    32 GB vs 4 GB
  • No speaker
    This smartwatch does not include a built-in speaker, the average smartwatch does. 56.7% of smartwatches include a built-in speaker.
  • 23.3 g heavier
    This smartwatch is heavier than the average smartwatch (68.3 g vs 45 g). The average smartwatch weighs 45.0 g.
    68.3 g vs 45.0 g
  • 60 min slower charging
    This smartwatch charges more slowly than the average smartwatch (180 min vs 120 min). The average smartwatch takes 120 min to charge from empty.
    180 min vs 120 min
  • 2.05 mm thicker
    This smartwatch is thicker than the average smartwatch (13.8 mm vs 11.7 mm). The average smartwatch is 11.7 mm thick.
    13.75 mm vs 11.7 mm
  • 6 mm wider case
    This smartwatch has a wider case than the average smartwatch (48.5 mm vs 42.5 mm). The average smartwatch measures 42.5 mm across.
    48.5 mm vs 42.5 mm
  • 3.5 mm taller case
    This smartwatch has a taller case than the average smartwatch (48.5 mm vs 45 mm). The average smartwatch is 45.0 mm tall.
    48.5 mm vs 45.0 mm
  • 60 min slower charging
    This smartwatch charges more slowly than the average smartwatch (180 min vs 120 min). The average smartwatch takes 120 min to charge from empty.
    180 min vs 120 min
  • 23.3 g heavier
    This smartwatch is heavier than the average smartwatch (68.3 g vs 45 g). The average smartwatch weighs 45.0 g.
    68.3 g vs 45.0 g
  • 2.05 mm thicker
    This smartwatch is thicker than the average smartwatch (13.8 mm vs 11.7 mm). The average smartwatch is 11.7 mm thick.
    13.75 mm vs 11.7 mm
  • 6 mm wider case
    This smartwatch has a wider case than the average smartwatch (48.5 mm vs 42.5 mm). The average smartwatch measures 42.5 mm across.
    48.5 mm vs 42.5 mm
  • 3.5 mm taller case
    This smartwatch has a taller case than the average smartwatch (48.5 mm vs 45 mm). The average smartwatch is 45.0 mm tall.
    48.5 mm vs 45.0 mm
  • No speaker
    This smartwatch does not include a built-in speaker, the average smartwatch does. 56.7% of smartwatches include a built-in speaker.

Video reviews

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

9.0
We Do Tech
≈ estimated
15/04/2025
Hands-on review · fitness tracking, gym and sensor tests
Verdict
Amazfit T-Rex 3 is very good value and a strong Garmin alternative, though it is bulky and not perfect at counting reps.
9.0
Neil Begasa
≈ estimated
05/04/2025
Long-term review · 3 months of daily use and hikes
Verdict
Amazfit T-Rex 3 is a budget outdoor smartwatch with great battery life, GPS and durability, though it lacks calls and messaging.
5.0
DC Rainmaker
≈ estimated
05/01/2025
Long-term review · two months of daily use
Verdict
Amazfit T-Rex 3 is interesting, with great battery life, but weak display clarity and navigation make it hard to recommend yet.
9.0
The Gray Dog
≈ estimated
31/12/2024
Hands-on review · daily wear and workout tests
Verdict
Amazfit T-Rex 3 offers excellent value for the price with few compromises, though its heart rate monitor needs software fixes.
7.0
Aesthetic AL
≈ estimated
27/12/2024
Switch from Garmin · one month of use
Verdict
Amazfit T-Rex 3 has a strong display and good exercise recognition, but no speaker, weak sleep scores and some quirks.
8.0
The Quantified Scientist
≈ estimated
21/12/2024
Lab review · heart rate, GPS and sleep tests
Verdict
Amazfit T-Rex 3 offers good heart rate and GPS for the price, but its sleep tracking is weaker and its ecosystem less mature than Garmin's.
8.0
DesFit
≈ estimated
18/12/2024
Long-term test · over two months of daily use
Verdict
Amazfit T-Rex 3 offers strong value for the price, but its sleep scores, navigation and Strava sync still need refinement.
9.0
Chase the Summit
≈ estimated
05/12/2024
Long-term test · four months of daily use
Verdict
Amazfit T-Rex 3 is not a Fenix 8 killer, but it is an excellent-value budget sport watch with a few gaps.
8.0
Matt LeGrand
≈ estimated
04/12/2024
Hands-on review · running tests and Garmin comparison
Verdict
Amazfit T-Rex 3 is not a Garmin beater, but a strong low-cost option for buyers who want a durable, do-everything sports watch.
8.0
kobo4
≈ estimated
02/12/2024
Long-term test · battery life over 5 weeks
Verdict
Amazfit T-Rex 3 lasts about a month on regular use, though its wake gesture, night brightness and home button need work.
9.0
Vimal Chintapatla
≈ estimated
28/11/2024
Hands-on review · weeks of daily use and a feature rundown
Verdict
Amazfit T-Rex 3 is a strong rugged outdoor watch, though missing Bluetooth calling and limited message replies are its main drawbacks.
9.0
Active Ideas
≈ estimated
13/11/2024
Deep-dive review · maps, games, widgets and features
Verdict
Amazfit T-Rex 3 is good value for the price, though its city list and chess support could be better.
More graded video reviews (8)
creator’s own scoreestimated by us

What reviewers agree on

Based on 6 · 12

Reviewers praise the long battery life and sharp display, but heart rate accuracy divides opinion and calls through the speaker disappoint.
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
cleverhiker.com
✓ explicit
30/04/2025
Field test · Adventure GPS watch
Verdict
The Amazfit T-Rex 3 is a durable adventure watch with offline maps and long battery life, but it is bulky and its companion app can crash.
7.0
advnture.com
✓ explicit
06/09/2025
Field test · Rugged adventure watch
Verdict
The Amazfit T-Rex 3 is a tough, big-screened outdoor watch for trail runners and hikers, but its maps are fiddly and it is heavy and slow to charge.
9.0
basic-tutorials.de
✓ explicit
09/02/2025
Practical test · Rugged sports watch
Verdict
The Amazfit T-Rex 3 is a sturdy watch with reliable buttons and many watch faces, but its maps feel clunky and some German text is cut off.
9.5
capital.fr
≈ estimated
11/06/2025
Hands-on test · Sports and health watch
Verdict
The Amazfit T-Rex 3 is a capable sports watch with precise GPS and offline maps, but its health insights are behind a subscription and its scores seem optimistic.
8.6
larazon.es
✓ explicit
25/03/2025
Hands-on test · G-Shock style watch
Verdict
The Amazfit T-Rex 3 looks rugged and lasts 7 to 9 days in real use, but it cannot take calls, its sleep data is inconsistent and charging is slow.
9.0
tecnorecensioni.com
≈ estimated
07/03/2025
Hands-on test · Rugged sports watch
Verdict
The Amazfit T-Rex 3 is a comfortable, bright outdoor watch with 170+ sport modes including Hyrox and freediving, but it is large and ships without a charging cable.

Third-party reviews

What we like about Amazfit T-Rex 3

  • Battery is rated at 27 days, and real use often reaches one to two weeks.
  • Dual-frequency GPS keeps tracks steady on trails.
  • Offline maps let you navigate without a phone.
  • Stainless steel bezel and Gorilla Glass hold up on rocky trails.
  • The 2000 nits screen stays readable in direct sunlight.
  • 177 exercise modes come with automatic activity detection.

What we don't like about Amazfit T-Rex 3

  • At 68.3 g and 48.5 mm wide, it is heavy and bulky for slim wrists.
  • Charging takes 180 min, so the watch is off the wrist for a while.
  • There is no LED flashlight, and no Spotify app.
  • Health insights are locked behind a subscription.
  • Gorilla Glass rather than sapphire means the screen scratches more easily.

Verdict

Weeks between charges is the first thing to notice about the Amazfit T-Rex 3. The battery is rated at 27 days, and in real use it lasted roughly one to two weeks. With GPS on the battery lasts 42 h, and the dual-frequency GPS keeps tracks steady on trails. The screen reaches 2000 nits, so it stays readable in strong sun, and the watch is water-resistant to 100 m. A list of 177 exercise modes covers most sports. The trade-offs are weight and charging: at 68.3 g it is heavy and bulky, and it takes 180 min to charge. It suits a hiker, climber or runner who wants a rugged watch that goes a week or more without a plug.

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