Tag Heuer Connected Modular 45 Review | 126 Data compared

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  • Avg. price in UK: ~£1,410
  • Avg. price in US: ~$1,650
  • Screen size: 1.39 inch
  • Battery life: 1.04 day/s
  • Display type: AMOLED

Tag Heuer Connected Modular 45 review. Compare 126 technical specifications and user reviews to see how it ranks among smartwatches and if it is worth buying.

5.7

Overall score

What it is: An overall evaluation of the smartwatch's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best Smartwatches on the market.

Score components:

90.0%

5.5

Technical Score

10.0%

7.3

User score

Good
5.5

Technical Score

What it is: An assessment of the smartwatch's technical performance, covering eight key areas: performance & hardware, software, camera, connectivity, display, battery, audio, and design.

When it matters: When you want to compare Smartwatches based on technical performance and available features.

Score components:

24.0%

1.0

Health

21.0%

8.4

Fitness

16.0%

5.2

Battery

14.0%

6.5

Smart features

12.0%

7.6

Connectivity

9.0%

8.1

Display & Design

4.0%

3.8

Hardware

Good
7.3

User score

What it is: A rating that combines user reviews and the total number of reviews received by the smartwatch

When it matters: When you want to know how a smartwatch handles daily tasks and how reliable it remains over time according to user feedback.

Score components:

70.0%

10

User reviews

30.0%

1.0

Popularity

User score:
United Kingdom
amazon
5.0
(1)

(Reviews last updated: April 2026)

Very good
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    Best prices in UK

    Best rankings

    ?

    Available: ranking among products currently available (including other versions of this product).
    All: ranking among all products in the database.

    Verdict

    The TAG Heuer Connected Modular 45 is a luxury Swiss-made smartwatch featuring a 45mm titanium case, a 1.39-inch AMOLED display (400x400 resolution) protected by scratch-resistant sapphire crystal, and 50m water resistance. Powered by an Intel Atom Z34XX processor with 512MB of RAM and 4GB of storage, its defining characteristic is a modular design that allows users to swap the digital module for a mechanical Calibre 5 or Chronograph movement, alongside interchangeable lugs and straps. Main pros include its premium build quality, extensive physical customisation, and built-in GPS and NFC for payments; however, cons include its high price point, the absence of a heart rate monitor, and a battery life that typically requires nightly charging.

    Technical Specifications of smartwatch Tag Heuer Connected Modular 45

    Technical Score

    What it is: An assessment of the smartwatch's technical performance, covering eight key areas: performance & hardware, software, camera, connectivity, display, battery, audio, and design.

    When it matters: When you want to compare Smartwatches based on technical performance and available features.

    Score components:

    24.0%

    1.0

    Health

    21.0%

    8.4

    Fitness

    16.0%

    5.2

    Battery

    14.0%

    6.5

    Smart features

    12.0%

    7.6

    Connectivity

    9.0%

    8.1

    Display & Design

    4.0%

    3.8

    Hardware

    5.5
    Tag Heuer Connected Modular 45 has a technical score of 5.52 points, which is lower than 70.6% of smartwatches.
    User score

    What it is: A rating that combines user reviews and the total number of reviews received by the smartwatch

    When it matters: When you want to know how a smartwatch handles daily tasks and how reliable it remains over time according to user feedback.

    Score components:

    70.0%

    10

    User reviews

    30.0%

    1.0

    Popularity

    User score:
    United Kingdom
    amazon
    5.0
    (1)

    (Reviews last updated: April 2026)

    7.3
    Tag Heuer Connected Modular 45 has a user score of 7.3 points, which is lower than 80.4% of smartwatches.
    Popularity
    What it is: An indicator based on the number of reviews received by the smartwatch.
    When it matters: When you prefer to purchase a product chosen and reviewed by many other consumers.
    1.0
    Tag Heuer Connected Modular 45 has a popularity of 1 points, which is lower than 78.2% of products in this category.
    Ratio quality/price

    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 components:

    60.0%

    5.7

    Overall score

    40.0%

    3.1

    Price

    4.9
    Tag Heuer Connected Modular 45 has a quality-to-price ratio of 4.9 points, which is lower than 99.3% of products in this category.
    Brand name
    What it is: The company that designs, sells, and supports the watch.
    When it matters: When brand ecosystem, style, or support matters to you.

    Importance: MEDIUM

    Tag Heuer
    Heart rate monitor
    What it is: A built-in sensor that measures your pulse directly from the wrist.
    When it matters: When you want health data from your wrist during the day or night.

    Importance: HIGH

    no
    Tag Heuer Connected Modular 45 does not include a heart rate monitor. 90.4% of smartwatches include a heart rate monitor.
    Blood oxygen monitoring
    What it is: A wrist-based feature that estimates blood oxygen saturation over time.
    When it matters: When you want health data from your wrist during the day or night.

    Importance: HIGH

    no
    Tag Heuer Connected Modular 45 does not support blood oxygen monitoring. 64.4% of smartwatches support blood oxygen monitoring.
    ECG
    What it is: The ability to record a single-lead electrocardiogram from the wrist.
    When it matters: When you want health data from your wrist during the day or night.

    Importance: HIGH

    no
    Tag Heuer Connected Modular 45 does not support ECG. 15.1% of smartwatches support ECG.
    Irregular heart rate warnings
    What it is: Notifications that flag heart-rate patterns which appear unusually irregular.
    When it matters: When you want health data from your wrist during the day or night.

    Importance: MEDIUM

    no
    Tag Heuer Connected Modular 45 does not support irregular heart rate warnings. 43.7% of smartwatches support irregular heart rate warnings.
    Show more
    Accelerometer
    What it is: A motion sensor that measures acceleration, steps, gestures, and general movement.
    When it matters: When you track workouts and want better training data.

    Importance: MEDIUM

    yes
    Tag Heuer Connected Modular 45 includes an accelerometer. 99.1% of smartwatches include an accelerometer.
    Barometer
    What it is: A pressure sensor used for altitude changes, elevation estimates, and weather-related context.
    When it matters: When you run, ride, hike, or navigate without relying on your phone.

    Importance: MEDIUM

    no
    Tag Heuer Connected Modular 45 does not include a barometer. 45.6% of smartwatches include a barometer.
    Gyroscope
    What it is: A motion sensor that measures rotation and helps interpret wrist movement more accurately.
    When it matters: When you track workouts and want better training data.

    Importance: MEDIUM

    yes
    Tag Heuer Connected Modular 45 includes a gyroscope. 64.6% of smartwatches include a gyroscope.
    Cadence sensor
    What it is: A sensor input used to measure step or pedal rhythm during training.
    When it matters: When you track workouts and want better training data.

    Importance: MEDIUM

    no
    Tag Heuer Connected Modular 45 does not include a cadence sensor. 20.1% of smartwatches include a cadence sensor.
    Distance tracking
    What it is: The ability to measure how far you move during walks, runs, rides, or other activities.
    When it matters: When you track workouts and want better training data.

    Importance: MEDIUM

    yes
    Tag Heuer Connected Modular 45 supports distance tracking. 95.7% of smartwatches support distance tracking.
    Show more
    Battery life
    What it is: The typical endurance the watch can deliver on a full charge under the stated usage pattern.
    When it matters: When you do not want to charge the watch too often.

    Importance: HIGH

    Good value: >=7 days

    1.04 day/s
    Tag Heuer Connected Modular 45 offers a battery life of 1.04 day/s which is shorter than that of 87.1% of smartwatches of smartwatches.
    Converted from roughly 24-25 hours of battery life.
    Battery life in training mode
    What it is: The expected endurance while workout tracking and related training functions are active.
    When it matters: When you do not want to charge the watch too often.

    Importance: HIGH

    Good value: >=36.8 h

    6 h
    Tag Heuer Connected Modular 45 lasts 6 h in training mode which is shorter than 83.8% of smartwatches and equal to that of 6% of smartwatches.
    Battery life with GPS on
    What it is: The expected runtime when satellite tracking stays active throughout use.
    When it matters: When you do not want to charge the watch too often.

    Importance: HIGH

    Good value: >=35 h

    ?
    Battery power
    What it is: The battery capacity, usually measured in milliampere-hours (mAh).
    When it matters: When you do not want to charge the watch too often.

    Importance: HIGH

    Good value: >=397 mAh

    378 mAh
    Tag Heuer Connected Modular 45 has a battery capacity of 378 mAh which is larger than the batteries in 72% of smartwatches of smartwatches.
    Charge time
    What it is: The time needed to recharge the battery from empty to full or to a stated percentage.
    When it matters: When you want to top up the battery quickly.

    Importance: HIGH

    Good value: <=102 min

    ?
    Show more
    Operating system
    What it is: The software platform that runs the watch interface, apps, and core functions.
    When it matters: When you care about apps, features, and long-term support.

    Importance: HIGH

    Wear OS
    Tag Heuer Connected Modular 45 runs Wear OS which is more advanced than the operating system in 78.9% of smartwatches and the same as that in 16.7% of smartwatches.
    OS detail: Wear OS (2.0).
    Software update frequency
    What it is: Shows how actively the watch is still updated: regular means ongoing updates throughout active support, occasional means updates every few months or only from time to time, and ended means active software support has mostly stopped.
    When it matters: When you care how actively the watch is still supported with fixes, patches, and new features.

    Importance: MEDIUM

    ended
    Tag Heuer Connected Modular 45 has ended software update support which is less active than that of 42.6% of smartwatches and equal to that of 57.5% of smartwatches.
    Updates appear infrequent or sporadic.
    Third-party app support
    What it is: Support for installing or using apps from developers beyond the watch maker.
    When it matters: When you care about apps, features, and long-term support.

    Importance: MEDIUM

    yes
    Tag Heuer Connected Modular 45 supports third-party apps. 47.6% of smartwatches support third-party apps.
    Notifications
    What it is: Mirroring of calls, messages, apps, or other alerts on the watch.
    When it matters: When you want to check alerts without taking out your phone.

    Importance: MEDIUM

    yes
    Tag Heuer Connected Modular 45 supports notifications. 99.9% of smartwatches support notifications.
    Voice assistant support
    What it is: Support for a voice assistant that can answer queries or trigger actions from the wrist.
    When it matters: When you want to control the watch or reply without typing.

    Importance: MEDIUM

    yes
    Tag Heuer Connected Modular 45 supports voice assistants. 68% of smartwatches support voice assistants.
    Show more
    Cellular module
    What it is: Built-in mobile connectivity that can keep the watch online away from the phone.
    When it matters: When you want calls, messages, or data without your phone nearby.

    Importance: HIGH

    no
    Tag Heuer Connected Modular 45 does not include a cellular module. 17.2% of smartwatches include a cellular module.
    SIM cards
    What it is: The number or type of SIM options the watch accepts for cellular service.
    When it matters: When you want calls, messages, or data without your phone nearby.

    Importance: LOW

    Good value: eSIM support

    0
    GPS
    What it is: Built-in satellite positioning that lets the watch record location during outdoor activity.
    When it matters: When you run, ride, hike, or navigate without relying on your phone.

    Importance: HIGH

    yes
    Tag Heuer Connected Modular 45 supports GPS. 56.1% of smartwatches support GPS.
    Galileo support
    What it is: Support for Galileo satellites alongside other positioning systems.
    When it matters: When you run, ride, hike, or navigate without relying on your phone.

    Importance: MEDIUM

    no
    Tag Heuer Connected Modular 45 does not support Galileo navigation. 38.7% of smartwatches support Galileo navigation.
    Supports other GNSS systems, but Galileo is not listed.
    Compass
    What it is: A directional sensor that helps the watch determine heading and orientation.
    When it matters: When you run, ride, hike, or navigate without relying on your phone.

    Importance: MEDIUM

    yes
    Tag Heuer Connected Modular 45 includes a compass. 49.3% of smartwatches include a compass.
    Show more
    Screen size
    What it is: The diagonal measurement of the visible display area, usually expressed in inches.
    When it matters: When you want the screen to be easy to read at a glance.

    Importance: HIGH

    Good value: >=1.5 inch

    1.39 inch
    Tag Heuer Connected Modular 45 has a screen size of 1.39 inch which is smaller than the screens of 51% of smartwatches and equal to those of 9.6% of smartwatches.
    Display type
    What it is: The screen technology used by the watch, such as AMOLED, OLED, or memory-in-pixel LCD.
    When it matters: When you want the screen to be easy to read at a glance.

    Importance: HIGH

    AMOLED
    Tag Heuer Connected Modular 45 uses a AMOLED display type which is more advanced than that of 48.8% of smartwatches and the same as that of 51.3% of smartwatches.
    Resolution
    What it is: The total number of pixels available on the watch display.
    When it matters: When you want the screen to be easy to read at a glance.

    Importance: MEDIUM

    Good value: >=416 x 416

    400 x 400
    Tag Heuer Connected Modular 45 has a display resolution of 400x400 which is higher than that of 69.4% of smartwatches and equal to that of 2.8% of smartwatches.
    Pixel density
    What it is: The number of pixels packed into each inch of the display.
    When it matters: When you want the screen to be easy to read at a glance.

    Importance: MEDIUM

    Good value: >=326 ppi

    407 ppi
    Tag Heuer Connected Modular 45 has a pixel density of 407 ppi which is higher than that of 70.2% of smartwatches and equal to that of 1.8% of smartwatches.
    Display brightness
    What it is: The peak brightness the display can reach, usually expressed in nits.
    When it matters: When you want the screen to stay readable outdoors and in strong sunlight.

    Importance: HIGH

    Good value: >=1000 nits

    ?
    Show more
    CPU speed
    What it is: The clock speed of the watch processor, usually expressed in GHz or MHz.
    When it matters: When you want apps and menus to feel smooth.

    Importance: MEDIUM

    Good value: Modern standard

    2 x 0.8 GHz
    Tag Heuer Connected Modular 45 uses a CPU configuration of 2x0.8 GHz which is faster than that in 67.6% of smartwatches and equal to that in 0.4% of smartwatches.
    Derived from core-count and per-core clock notation
    Processor model
    What it is: The processor model is the chipset or SoC that powers the watch's performance, connectivity, and efficiency.
    When it matters: When you care about app responsiveness, platform generation, and long-term feature support.

    Importance: LOW

    Good value: modern smartwatch chipset

    ?
    RAM
    What it is: The amount of working memory available for apps, watch faces, and background tasks.
    When it matters: When you want apps and menus to feel smooth.

    Importance: MEDIUM

    Good value: >=1 GB

    0.5 GB
    Tag Heuer Connected Modular 45 has 0.5 GB of RAM which is smaller than the RAM in 72.6% of smartwatches and equal to that of 19.2% of smartwatches.
    Internal storage
    What it is: Built-in storage for apps, music, watch faces, and other local data.
    When it matters: When you want more room for apps, music, or offline data.

    Importance: MEDIUM

    Good value: >=8 GB

    4 GB
    Tag Heuer Connected Modular 45 uses 4 GB for internal storage which is larger than that of 40.5% of smartwatches and equal to that of 26.9% of smartwatches.
    External memory slot
    What it is: A slot for expandable storage such as a memory card, if the watch provides one.
    When it matters: When you want more room for apps, music, or offline data.

    Importance: LOW

    no
    Tag Heuer Connected Modular 45 does not include an external memory slot. 0.3% of smartwatches include an external memory slot.
    Show more

    Tag Heuer Connected Modular 45 vs the average smartwatch

    • Stronger display glass
      Tag Heuer Connected Modular 45 uses sapphire display glass, while the average smartwatch uses mineral glass.
      What it is: The glass material or protective cover used over the display.
      When it matters: When you want the screen to be easy to read at a glance.

      Importance: MEDIUM

      Good value: Sapphire or Gorilla Glass

      Tag Heuer Connected Modular 45 uses sapphire display glass, while the average smartwatch uses mineral glass.sapphire vs mineral glass
    • More advanced operating system
      Tag Heuer Connected Modular 45 runs a more advanced operating system than the average smartwatch (Wear OS vs Proprietary OS).
      OS detail: Wear OS (2).
      What it is: The software platform that runs the watch interface, apps, and core functions.
      When it matters: When you care about apps, features, and long-term support.

      Importance: HIGH

      Tag Heuer Connected Modular 45 runs a more advanced operating system than the average smartwatch (Wear OS vs Proprietary OS).Wear OS vs Proprietary OS
    • Has NFC
      Tag Heuer Connected Modular 45 supports NFC, the average smartwatch does not. 42.5% of smartwatches support NFC.
      What it is: Near-field communication hardware used for payments, pairing, or quick tap-based actions.
      When it matters: When you want to pay quickly or pair devices with a tap.

      Importance: HIGH

      Tag Heuer Connected Modular 45 supports NFC, the average smartwatch does not. 42.5% of smartwatches support NFC.
    • Has multi-sport mode
      Tag Heuer Connected Modular 45 includes a multi-sport mode, the average smartwatch does not. 49.4% of smartwatches include a multi-sport mode.
      What it is: A training mode designed to handle multiple sports within a single session.
      When it matters: When you track workouts and want better training data.

      Importance: MEDIUM

      Tag Heuer Connected Modular 45 includes a multi-sport mode, the average smartwatch does not. 49.4% of smartwatches include a multi-sport mode.
    • Includes maps
      Tag Heuer Connected Modular 45 supports maps, the average smartwatch does not. 32.2% of smartwatches support maps.
      What it is: The ability to view maps, navigation guidance, or route layouts on the watch.
      When it matters: When you run, ride, hike, or navigate without relying on your phone.

      Importance: MEDIUM

      Tag Heuer Connected Modular 45 supports maps, the average smartwatch does not. 32.2% of smartwatches support maps.
    • Supports third-party apps
      Tag Heuer Connected Modular 45 supports third-party apps, the average smartwatch does not. 47.6% of smartwatches support third-party apps.
      What it is: Support for installing or using apps from developers beyond the watch maker.
      When it matters: When you care about apps, features, and long-term support.

      Importance: MEDIUM

      Tag Heuer Connected Modular 45 supports third-party apps, the average smartwatch does not. 47.6% of smartwatches support third-party apps.
    • Has compass
      Tag Heuer Connected Modular 45 includes a compass, the average smartwatch does not. 49.3% of smartwatches include a compass.
      What it is: A directional sensor that helps the watch determine heading and orientation.
      When it matters: When you run, ride, hike, or navigate without relying on your phone.

      Importance: MEDIUM

      Tag Heuer Connected Modular 45 includes a compass, the average smartwatch does not. 49.3% of smartwatches include a compass.
    • Supports Wi-Fi
      Tag Heuer Connected Modular 45 supports Wi-Fi, the average smartwatch does not. 43.4% of smartwatches support Wi-Fi.
      What it is: Built-in Wi-Fi that lets the watch connect to wireless networks directly.
      When it matters: When you want the watch to work smoothly with your phone and accessories.

      Importance: MEDIUM

      Tag Heuer Connected Modular 45 supports Wi-Fi, the average smartwatch does not. 43.4% of smartwatches support Wi-Fi.
    • Has multi-sport mode
      Tag Heuer Connected Modular 45 includes a multi-sport mode, the average smartwatch does not. 49.4% of smartwatches include a multi-sport mode.
    • Has external HR monitor
      Tag Heuer Connected Modular 45 supports external heart rate monitor compatibility, the average smartwatch does not. 41.3% of smartwatches support external heart rate monitor compatibility.
    • 78 mAh larger battery capacity
      Tag Heuer Connected Modular 45 has a larger battery capacity than the average smartwatch (378 mAh vs 300 mAh). The average smartwatch battery is 300 mAh.
    • Has NFC
      Tag Heuer Connected Modular 45 supports NFC, the average smartwatch does not. 42.5% of smartwatches support NFC.
    • Includes maps
      Tag Heuer Connected Modular 45 supports maps, the average smartwatch does not. 32.2% of smartwatches support maps.
    • Has compass
      Tag Heuer Connected Modular 45 includes a compass, the average smartwatch does not. 49.3% of smartwatches include a compass.
    • Supports Wi-Fi
      Tag Heuer Connected Modular 45 supports Wi-Fi, the average smartwatch does not. 43.4% of smartwatches support Wi-Fi.
    • Stronger display glass
      Tag Heuer Connected Modular 45 uses sapphire display glass, while the average smartwatch uses mineral glass.
    • Better case material
      Tag Heuer Connected Modular 45 uses titanium for the case material, while the average smartwatch uses polycarbonate.
    • Better band material
      Tag Heuer Connected Modular 45 uses rubber, leather, titanium for the band material, while the average smartwatch uses silicone.
    • Has hybrid design
      Tag Heuer Connected Modular 45 has a hybrid design, the average smartwatch does not. 9% of smartwatches have a hybrid design.
    • 81 ppi higher pixel density
      Tag Heuer Connected Modular 45 has a higher pixel density than the average smartwatch (407 ppi vs 326 ppi). The average smartwatch display reaches 326 ppi.
    • Higher resolution
      Tag Heuer Connected Modular 45 has a display resolution of 400x400, while the average smartwatch reaches 352x430.
    • More advanced operating system
      Tag Heuer Connected Modular 45 runs a more advanced operating system than the average smartwatch (Wear OS vs Proprietary OS).
    • Supports third-party apps
      Tag Heuer Connected Modular 45 supports third-party apps, the average smartwatch does not. 47.6% of smartwatches support third-party apps.
    • Faster CPU speed
      Tag Heuer Connected Modular 45 uses a CPU configuration of 2x0.8 GHz, while the average smartwatch uses 1 GHz.
    • No blood oxygen
      Tag Heuer Connected Modular 45 does not support blood oxygen monitoring, the average smartwatch does. 64.4% of smartwatches support blood oxygen monitoring.
    • No stress monitoring
      Tag Heuer Connected Modular 45 does not support stress monitoring, the average smartwatch does. 65.4% of smartwatches support stress monitoring.
    • No sleep tracking
      Tag Heuer Connected Modular 45 does not support sleep tracking, the average smartwatch does. 94% of smartwatches support sleep tracking.
    • No heart rate monitor
      Tag Heuer Connected Modular 45 does not include a heart rate monitor, the average smartwatch does. 90.4% of smartwatches include a heart rate monitor.
    • No cycle tracking
      Tag Heuer Connected Modular 45 does not support menstrual cycle tracking, the average smartwatch does. 64.6% of smartwatches support menstrual cycle tracking.
    • No inactivity alerts
      Tag Heuer Connected Modular 45 does not support inactivity alerts, the average smartwatch does. 85.7% of smartwatches support inactivity alerts.
    • No smart scales
      Tag Heuer Connected Modular 45 does not support smart scale compatibility, the average smartwatch does. 56.8% of smartwatches support smart scale compatibility.
    • No pace measurement
      Tag Heuer Connected Modular 45 does not support pace tracking, the average smartwatch does. 78% of smartwatches support pace tracking.
    • No coaching
      Tag Heuer Connected Modular 45 does not support coaching, the average smartwatch does. 51.8% of smartwatches support coaching.
    • No voice feedback
      Tag Heuer Connected Modular 45 does not support voice feedback, the average smartwatch does. 62.1% of smartwatches support voice feedback.
    • 5.96 day/s shorter battery life
      Tag Heuer Connected Modular 45 offers 1 day/s of battery life, while the average smartwatch offers 7 day/s.
      Converted from roughly 24-25 hours of battery life.
    • 14 h shorter training battery life
      Tag Heuer Connected Modular 45 lasts less in training mode than the average smartwatch (6 h vs 20 h). The average smartwatch lasts 20 h.
    • Older Bluetooth version
      Tag Heuer Connected Modular 45 supports an older Bluetooth version than the average smartwatch (4.1 vs 5.0). The average smartwatch uses 5.0.
    • 17.5 g heavier weight
      Tag Heuer Connected Modular 45 is heavier than the average smartwatch (62.5 g vs 45 g). The average smartwatch weighs 45 g.
    • 2.15 mm thicker watch body
      Tag Heuer Connected Modular 45 is thicker than the average smartwatch (13.8 mm vs 11.6 mm). The average smartwatch thickness is 11.6 mm.
    • 0.01 inch smaller screen size
      Tag Heuer Connected Modular 45 has a smaller screen size than the average smartwatch (1.4 inch vs 1.4 inch). The average smartwatch screen is 1.4 inch.
    • No call answering
      Tag Heuer Connected Modular 45 does not support call answering, the average smartwatch does. 57% of smartwatches support call answering.
      Call can be answered/managed, but conversation audio is on phone/headset.
    • No smart alarm
      Tag Heuer Connected Modular 45 does not support a smart alarm, the average smartwatch does. 52.7% of smartwatches support this feature.
    • No speaker
      Tag Heuer Connected Modular 45 does not include a built-in speaker, the average smartwatch does. 54.7% of smartwatches include a built-in speaker.
    • 0.5 GB less RAM
      Tag Heuer Connected Modular 45 has less RAM than the average smartwatch (0.5 GB vs 1 GB). The average smartwatch includes 1 GB of RAM.
    • 4 year/s older release date
      Tag Heuer Connected Modular 45 is an older model than the average smartwatch (2017 vs 2021). The average smartwatch was released in 2021.
      April 2017
    • No blood oxygen
      Tag Heuer Connected Modular 45 does not support blood oxygen monitoring, the average smartwatch does. 64.4% of smartwatches support blood oxygen monitoring.
      What it is: A wrist-based feature that estimates blood oxygen saturation over time.
      When it matters: When you want health data from your wrist during the day or night.

      Importance: HIGH

      Tag Heuer Connected Modular 45 does not support blood oxygen monitoring, the average smartwatch does. 64.4% of smartwatches support blood oxygen monitoring.
    • No speaker
      Tag Heuer Connected Modular 45 does not include a built-in speaker, the average smartwatch does. 54.7% of smartwatches include a built-in speaker.
      What it is: An onboard speaker for calls, prompts, alarms, or media playback.
      When it matters: When you want audio, calls, or voice features on the watch itself.

      Importance: LOW

      Tag Heuer Connected Modular 45 does not include a built-in speaker, the average smartwatch does. 54.7% of smartwatches include a built-in speaker.
    • No stress monitoring
      Tag Heuer Connected Modular 45 does not support stress monitoring, the average smartwatch does. 65.4% of smartwatches support stress monitoring.
      What it is: Stress estimates derived from heart rate, HRV, or similar body signals.
      When it matters: When you want health data from your wrist during the day or night.

      Importance: HIGH

      Tag Heuer Connected Modular 45 does not support stress monitoring, the average smartwatch does. 65.4% of smartwatches support stress monitoring.
    • No sleep tracking
      Tag Heuer Connected Modular 45 does not support sleep tracking, the average smartwatch does. 94% of smartwatches support sleep tracking.
      What it is: Automatic recording of sleep duration, stages, or sleep quality from overnight wear.
      When it matters: When you want health data from your wrist during the day or night.

      Importance: HIGH

      Tag Heuer Connected Modular 45 does not support sleep tracking, the average smartwatch does. 94% of smartwatches support sleep tracking.
    • No pace measurement
      Tag Heuer Connected Modular 45 does not support pace tracking, the average smartwatch does. 78% of smartwatches support pace tracking.
      What it is: Tracking of current or average pace during activities such as running or cycling.
      When it matters: When you track workouts and want better training data.

      Importance: MEDIUM

      Tag Heuer Connected Modular 45 does not support pace tracking, the average smartwatch does. 78% of smartwatches support pace tracking.
    • No heart rate monitor
      Tag Heuer Connected Modular 45 does not include a heart rate monitor, the average smartwatch does. 90.4% of smartwatches include a heart rate monitor.
      What it is: A built-in sensor that measures your pulse directly from the wrist.
      When it matters: When you want health data from your wrist during the day or night.

      Importance: HIGH

      Tag Heuer Connected Modular 45 does not include a heart rate monitor, the average smartwatch does. 90.4% of smartwatches include a heart rate monitor.
    • No coaching
      Tag Heuer Connected Modular 45 does not support coaching, the average smartwatch does. 51.8% of smartwatches support coaching.
      What it is: Guided training or wellness suggestions based on your data and habits.
      When it matters: When you track workouts and want better training data.

      Importance: LOW

      Tag Heuer Connected Modular 45 does not support coaching, the average smartwatch does. 51.8% of smartwatches support coaching.
    • No call answering
      Tag Heuer Connected Modular 45 does not support call answering, the average smartwatch does. 57% of smartwatches support call answering.
      Call can be answered/managed, but conversation audio is on phone/headset.
      What it is: The ability to answer an incoming call directly from the watch.
      When it matters: When you want to handle calls or alerts without taking out your phone.

      Importance: LOW

      Tag Heuer Connected Modular 45 does not support call answering, the average smartwatch does. 57% of smartwatches support call answering.

    Graphic comparison of Tag Heuer Connected Modular 45 and other Smartwatches

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    Third-party reviews

    United Kingdom

    (Reviews last updated: April 2026)

    What customers like about Tag Heuer Connected Modular 45?

    • Exceptional build quality with premium materials like titanium and sapphire crystal
    • Highly modular design allowing users to swap straps, lugs, and even the watch head
    • Crisp and vibrant 1.39-inch AMOLED display with no 'flat tire' design
    • Water-resistant up to 50 metres, making it suitable for swimming
    • Built-in GPS and NFC for contactless payments via Google Pay
    • Exclusive TAG Heuer Studio for creating thousands of custom watch face combinations

    What customers dislike about Tag Heuer Connected Modular 45?

    • Extremely high price point compared to smartwatches with similar technical specs
    • Battery life typically lasts only one day, often requiring nightly charging
    • Large and bulky 45mm case may feel too heavy or oversized for smaller wrists
    • Lacks a heart rate monitor, which is a standard feature on most fitness smartwatches
    • Non-rotating crown and bezel can make software navigation feel less intuitive
    • Performance can occasionally feel laggy when launching intensive apps

    Expert reviews

    W
    wareable.com
    17/05/2019
    Summary of the review
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    executivetraveller.com
    16/03/2017
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    pocket-lint.com
    03/04/2017
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    cnet.com
    14/03/2017
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    cyclingweekly.com
    24/08/2018
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    pastemagazine.com
    31/05/2017
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    theweek.com
    17/08/2017
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    B
    bosshunting.com.au
    29/01/2023
    Summary of the review
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    timeandtidewatches.com
    15/03/2017
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    S
    stuff.tv
    28/05/2017
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    wired.com
    15/03/2017
    Summary of the review
    W
    wareable.com
    30/03/2017
    Summary of the review
    T
    techradar.com
    01/12/2017
    Summary of the review
    B
    blick.ch
    15/03/2017
    Summary of the review
    N
    newgadgets.de
    06/05/2017
    Summary of the review
    P
    pctipp.ch
    04/05/2017
    Summary of the review
    H
    heise.de
    07/07/2017
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    C
    chrononautix.com
    27/05/2022
    Summary of the review
    W
    watchlounge.com
    21/03/2017
    Summary of the review
    L
    lexpress.fr
    16/03/2017
    Summary of the review
    R
    runnea.it
    Undated
    Summary of the review
    W
    wired.it
    15/03/2017
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    H
    horbiter.com
    03/12/2017
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    Video reviews

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