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

Martian G2g review: 127 specs compared

Avg. price:~£200Screen size:?Battery life:7 daysDisplay type:OLED

Martian G2g Review: Compare 127 technical specifications and 3 expert reviews to see how this product ranks in the Smartwatches category and whether it is worth buying.

Martian G2g
5.1/10

Overall score

Score
5.1/ 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
â–¼
<55-66-77-88-99-10
â–¼ Worse than 99% of models
Score components

35%

3.7

Technical score

30%

?

List scoreNot enough data yet, so we use 7.5, the mark of a weaker model in this category

25%

3.7

Reviews score

10%

?

Sentiment scoreNot enough data yet, so we use 6.8, the mark of a weaker model in this category

â–¼Worse than 99% of smartwatches
6.4

Value for money

Value for money
6.4/ 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
â–¼
<55-66-77-88-99-10
â–¼ Worse than 98% of models
Score components

70%

5.1

Overall score

30%

9.5

Price

â–¼Worse than 98%
3.7

Technical score

Technical score
3.7/ 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
â–¼
<55-66-77-88-99-10
â–¼ Worse than 99% of models
Score components

24%

2.3

Health

21%

2.7

Fitness

16%

5.0

Battery

14%

5.5

Smart features

12%

2.4

Connectivity

9%

5.7

Display & Design

4%

5.7

Hardware

â–¼Worse than 99%
3.7

Reviews score

Reviews score
3.7/ 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: 7.4 for now.
Share: Reviews count 25% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 99% of models

3.7

Mark 7.1 is below the typical mark 7.9 of this category, so it cannot lift the score above the technical score

80%

7.3

Average grade

20%

6.1

Popularity

Grades by review (3)
3 reviews, average 6.0/10. We use 5 reviews; the 2 missing count as the category's typical 8.0: (6.0 × 3 + 8.0 × 2) ÷ 5 = 6.8. Reviews count 25% of the overall score.
User ratings collected online are not part of this score.
â–¼Worse than 99%
?

List score

List score
7.5/ 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 (0)
Not in any best-of list yet, so this part counts as 7.5. Models in a list get 8 to 10.
Not in any best-of list yet
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Where to buy
    N/A~ £200
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.

What reviewers say about the Martian G2g

Based on 3

Reviewers agree the message display is the weak spot, hard to read and limiting, with little praise to balance it.
Criticised
Pick a topic to see who said what
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Smartwatches model ranking

Ranked #772 of 777 models in Smartwatches (Overall score)

Technical Specifications of smartwatch Martian G2g

Technical score
Technical score
3.7/ 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
â–¼
<55-66-77-88-99-10
â–¼ Worse than 99% of models
Score components:

24%

2.3

Health

21%

2.7

Fitness

16%

5.0

Battery

14%

5.5

Smart features

12%

2.4

Connectivity

9%

5.7

Display & Design

4%

5.7

Hardware

3.7
Reviews score
3.7
List score
?
Value for money
Value for money
6.4/ 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
â–¼
<55-66-77-88-99-10
â–¼ Worse than 98% of models
Score components:

70%

5.1

Overall score

30%

9.5

Price

6.4
Heart rate monitor
no
This smartwatch does not include a heart rate monitor. 90.7% of smartwatches include a heart rate monitor.
Blood oxygen monitoring
no
This smartwatch does not support blood oxygen monitoring. 69.7% of smartwatches support blood oxygen monitoring.
ECG
no
This smartwatch does not support ECG. 18.2% of smartwatches support ECG.
Irregular heart rate warnings
no
This smartwatch does not support irregular heart rate warnings. 50.6% of smartwatches support 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
no
This smartwatch does not include a barometer. 53.6% of smartwatches include a barometer.
Gyroscope
yes
This smartwatch includes a gyroscope. 28.9% of smartwatches include a gyroscope.
Gyroscope listed as 3-axis.
Cadence sensor
no
This smartwatch does not include a cadence sensor. 32.9% of smartwatches include a cadence sensor.
Distance tracking
no
This smartwatch does not support distance tracking. 96.4% of smartwatches support distance tracking.
Show more
Battery life
7 days
Market range: <1 day – >20 days
This smartwatch lasts 7 days on a charge, which is longer than 36.1% of Smartwatches and the same as 15.9% of Smartwatches.
Up to 7 days standby.
Battery life in training mode
?
Battery life with GPS on
N/A
Battery power
?
Charge time
120 min
Market range: <60 min – >150 min
This smartwatch charges from empty in 120 min, which is quicker than 13.3% of Smartwatches and the same as 44.6% of Smartwatches.
Show more
Operating system
Proprietary OS
This smartwatch runs Proprietary OS, which is less advanced than the system in 54.2% of Smartwatches and equal to 42% of Smartwatches.
Software update frequency
ended
This smartwatch has ended software update support which is less active than that of 46.1% of smartwatches and equal to that of 53.9% of smartwatches.
Third-party app support
no
This smartwatch does not support third-party apps. 51.6% 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
Cellular module
no
This smartwatch does not include a cellular module. 16.7% of smartwatches include a cellular module.
SIM cards
0
GPS
no
This smartwatch does not support GPS. 59.8% of smartwatches support GPS.
Galileo support
no
This smartwatch does not support Galileo navigation. 43.6% of smartwatches support Galileo navigation.
Dual-frequency GPS
no
This smartwatch does not support dual-frequency GPS. 15.1% of Smartwatches offer this.
Show more
Screen size
?
Display type
OLED
This smartwatch uses OLED, which is less advanced than the screen in 53.2% of Smartwatches and equal to 9.1% of Smartwatches.
Resolution
16x 96
This smartwatch has a display resolution of 16x96 which is lower than that of 99.6% of smartwatches and equal to that of 0.4% of smartwatches.
Pixel density
327 ppi
Market range: <213 ppi – >461 ppi
This smartwatch has a pixel density of 327 ppi, which is higher than 53.8% of Smartwatches and equal to 1.1% of Smartwatches.
Display brightness
?
Show more
What reviewers say
CPU speed
?
Processor model
?
RAM
?
Internal storage
0 GB
Market range: <0 GB – >32 GB
This smartwatch has 0 GB of internal storage, which is less than 76.5% of Smartwatches and equal to 23.5% of Smartwatches.
No local user storage for apps/media
External memory slot
no
This smartwatch does not include an external memory slot. 0.3% of smartwatches include an external memory slot.
Show more

Martian G2g vs the average smartwatch

246810TotalHealthFitnessBatteryConnectivityDisplay & DesignSmart featuresHardware
  • HRV tracking
    This smartwatch supports HRV tracking, the average smartwatch does not. 45.2% of smartwatches support HRV tracking.
  • Hybrid watch design
    This smartwatch has a hybrid design, the average smartwatch does not. 8.6% of smartwatches have a hybrid design.
  • 6 mm shorter case
    This smartwatch has a shorter case than the average smartwatch (39 mm vs 45 mm). The average smartwatch is 45 mm tall.
    39 mm vs 45 mm
  • 5.5 mm narrower case
    This smartwatch has a narrower case than the average smartwatch (37 mm vs 42.5 mm). The average smartwatch measures 42.5 mm across.
    37 mm vs 42.5 mm
  • HRV tracking
    This smartwatch supports HRV tracking, the average smartwatch does not. 45.2% of smartwatches support HRV tracking.
  • Hybrid watch design
    This smartwatch has a hybrid design, the average smartwatch does not. 8.6% of smartwatches have a hybrid design.
  • 6 mm shorter case
    This smartwatch has a shorter case than the average smartwatch (39 mm vs 45 mm). The average smartwatch is 45 mm tall.
    39 mm vs 45 mm
  • 5.5 mm narrower case
    This smartwatch has a narrower case than the average smartwatch (37 mm vs 42.5 mm). The average smartwatch measures 42.5 mm across.
    37 mm vs 42.5 mm
  • 47.1% lower review score
    Reviews score
    3.7/ 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: 7.4 for now.
    Share: Reviews count 25% of the overall score.
    Score distribution
    â–¼
    <55-66-77-88-99-10
    â–¼ Worse than 99% of models

    3.7

    Mark 7.1 is below the typical mark 7.9 of this category, so it cannot lift the score above the technical score

    80%

    7.3

    Average grade

    20%

    6.1

    Popularity

    Grades by review (3)
    3 reviews, average 6.0/10. We use 5 reviews; the 2 missing count as the category's typical 8.0: (6.0 × 3 + 8.0 × 2) ÷ 5 = 6.8. Reviews count 25% of the overall score.
    User ratings collected online are not part of this score.
    3.7 vs 7.0
  • No blood oxygen monitoring
    This smartwatch does not support blood oxygen monitoring, the average smartwatch does. 69.6% of smartwatches support blood oxygen monitoring.
  • No GPS support
    This smartwatch does not support GPS, the average smartwatch does. 59.7% of smartwatches support GPS.
  • No third-party apps
    This smartwatch does not support third-party apps, the average smartwatch does. 51.6% of smartwatches support third-party apps.
  • No irregular heart rate alerts
    This smartwatch does not support irregular heart rate warnings, the average smartwatch does. 50.6% of smartwatches support irregular heart rate warnings.
  • No stress monitoring
    This smartwatch does not support stress monitoring, the average smartwatch does. 68.7% of smartwatches support stress monitoring.
  • No multi-sport mode
    This smartwatch does not include a multi-sport mode, the average smartwatch does. 71.7% of smartwatches include a multi-sport mode.
  • No heart rate monitor
    This smartwatch does not include a heart rate monitor, the average smartwatch does. 90.5% of smartwatches include a heart rate monitor.
  • 47.1% lower review score
    Reviews score
    3.7/ 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: 7.4 for now.
    Share: Reviews count 25% of the overall score.
    Score distribution
    â–¼
    <55-66-77-88-99-10
    â–¼ Worse than 99% of models

    3.7

    Mark 7.1 is below the typical mark 7.9 of this category, so it cannot lift the score above the technical score

    80%

    7.3

    Average grade

    20%

    6.1

    Popularity

    Grades by review (3)
    3 reviews, average 6.0/10. We use 5 reviews; the 2 missing count as the category's typical 8.0: (6.0 × 3 + 8.0 × 2) ÷ 5 = 6.8. Reviews count 25% of the overall score.
    User ratings collected online are not part of this score.
    3.7 vs 7.0
  • 20.4% worse value for money
    Martian G2g has a lower value-for-money score than the average smartwatch (6.45 vs 7.8).
    6.45 vs 7.76
  • 81.8% more expensive
    Martian G2g is more expensive than the average smartwatch (£200 vs £110).
    £200 vs £110
  • No blood oxygen monitoring
    This smartwatch does not support blood oxygen monitoring, the average smartwatch does. 69.6% of smartwatches support blood oxygen monitoring.
  • No irregular heart rate alerts
    This smartwatch does not support irregular heart rate warnings, the average smartwatch does. 50.6% of smartwatches support irregular heart rate warnings.
  • No stress monitoring
    This smartwatch does not support stress monitoring, the average smartwatch does. 68.7% of smartwatches support stress monitoring.
  • No heart rate monitor
    This smartwatch does not include a heart rate monitor, the average smartwatch does. 90.5% of smartwatches include a heart rate monitor.
  • No sleep tracking
    This smartwatch does not support sleep tracking, the average smartwatch does. 93.8% of smartwatches support sleep tracking.
  • No cycle tracking
    This smartwatch does not support menstrual cycle tracking, the average smartwatch does. 66.8% of smartwatches support menstrual cycle tracking.
  • 8 years older
    This smartwatch was released earlier than the average smartwatch (2013 vs 2021). The average smartwatch was released in 2021.
    August 2013
    2013 vs 2021
  • No smart scale support
    This smartwatch does not support smart scale compatibility, the average smartwatch does. 57.1% of smartwatches support smart scale compatibility.
  • No inactivity alerts
    This smartwatch does not support inactivity alerts, the average smartwatch does. 92.6% of smartwatches support inactivity alerts.
  • No multi-sport mode
    This smartwatch does not include a multi-sport mode, the average smartwatch does. 71.7% of smartwatches include a multi-sport mode.
  • No automatic activity detection
    This smartwatch does not support automatic activity detection, the average smartwatch does. 81.8% of smartwatches support automatic activity detection.
  • No barometer
    This smartwatch does not include a barometer, the average smartwatch does. 53.6% of smartwatches include a barometer.
  • No pace tracking
    This smartwatch does not support pace tracking, the average smartwatch does. 80.6% of smartwatches support pace tracking.
  • No distance tracking
    This smartwatch does not support distance tracking, the average smartwatch does. 96.3% of smartwatches support distance tracking.
  • No route tracking
    This smartwatch does not support route tracking, the average smartwatch does. 77% of smartwatches support route tracking.
  • No coaching features
    This smartwatch does not support coaching, the average smartwatch does. 58.8% of smartwatches support coaching.
  • No auto-pause
    This smartwatch does not support auto pause, the average smartwatch does. 62.6% of smartwatches support auto pause.
  • No swim mode
    This smartwatch does not include a swim sport mode, the average smartwatch does. 76.9% of smartwatches include a swim sport mode.
  • No step tracking
    This smartwatch does not support step tracking, the average smartwatch does. 99.2% of smartwatches support step tracking.
  • No route support
    This smartwatch does not support route support, the average smartwatch does. 54.4% of smartwatches support route support.
  • No goal setting
    This smartwatch does not support goal setting, the average smartwatch does. 98.1% of smartwatches support goal setting.
  • No live tracking
    This smartwatch does not support live tracking, the average smartwatch does. 89.5% of smartwatches support live tracking.
  • No achievement tracking
    This smartwatch does not support achievements, the average smartwatch does. 87% of smartwatches support achievements.
  • No exercise tagging
    This smartwatch does not support exercise tagging, the average smartwatch does. 94.2% of smartwatches support exercise tagging.
  • No low-power mode
    This smartwatch does not include a low power mode, the average smartwatch does. 93.1% of smartwatches include a low power mode.
  • No GPS support
    This smartwatch does not support GPS, the average smartwatch does. 59.7% of smartwatches support GPS.
  • No compass
    This smartwatch does not include a compass, the average smartwatch does. 56.7% of smartwatches include a compass.
  • Less current Bluetooth version
    This smartwatch uses a less current Bluetooth version than the average smartwatch (4 vs 5).
    4 vs 5
  • No always-on display
    This smartwatch does not have an always-on display, the average smartwatch does. 70.3% of smartwatches have an always-on display.
  • No ambient light sensor
    This smartwatch does not include an ambient light sensor, the average smartwatch does. 63.5% of smartwatches include an ambient light sensor.
  • 20 m shallower water rating
    This smartwatch is rated for shallower water than the average smartwatch (30 m vs 50 m). The average smartwatch is rated to 50 m.
    30 m vs 50 m
  • More basic display
    This smartwatch uses a more basic screen than the average smartwatch (OLED vs AMOLED).
    OLED vs AMOLED
  • Lower resolution
    This smartwatch has a display resolution of 16x96, while the average smartwatch reaches 360x360.
    16x96 vs 360x360
  • 1.64 mm thicker
    This smartwatch is thicker than the average smartwatch (13.3 mm vs 11.7 mm). The average smartwatch is 11.7 mm thick.
    13.34 mm vs 11.7 mm
  • Less practical form
    This smartwatch uses a rectangular form, while the average smartwatch uses round.
    rectangular vs round
  • No touchscreen
    This smartwatch does not have a touch screen, the average smartwatch does. 91.5% of smartwatches have a touch screen.
  • 10 °C lower heat tolerance
    This smartwatch tolerates a lower temperature than the average smartwatch (35 °C vs 45 °C). The average smartwatch is rated up to 45 °C.
    35 °C vs 45 °C
  • 3.2 g heavier
    This smartwatch is heavier than the average smartwatch (48.2 g vs 45 g). The average smartwatch weighs 45 g.
    48.2 g vs 45 g
  • No third-party apps
    This smartwatch does not support third-party apps, the average smartwatch does. 51.6% of smartwatches support third-party apps.
  • No music playback
    This smartwatch does not support music playback, the average smartwatch does. 57.1% of smartwatches support music playback.
  • No passcode
    This smartwatch does not include passcode protection, the average smartwatch does. 70.4% of smartwatches include passcode protection.
  • No widget support
    This smartwatch does not support widgets, the average smartwatch does. 84.4% of smartwatches support widgets.
  • Limited personalization
    This smartwatch does not support personalization, the average smartwatch does. 99% of smartwatches support personalization.

Expert reviews

In-depth analysis and verdict from leading tech publications

6.0
travgear.com
≈ estimated
06/05/2014
Hands-on test · Voice-command watch
Verdict
The Martian G2G is a voice-control watch that makes phone-free calls through Siri or Google Now, but unreliable alerts let it down.
5.0
usatoday.com
≈ estimated
19/06/2013
Review · Classic-look smartwatch
Verdict
The Martian G2G is a classic-looking analog watch with voice commands, but glitches and speakerphone-style calls hold it back.
7.0
techradar.com
✓ explicit
29/06/2013
Review · Phone-linked smartwatch
Verdict
The Martian G2G works best as a phone accessory, with acceptable hands-free calls, but its Bluetooth connection drops too often.

Third-party reviews

What customers like about Martian G2g

  • Hands-free speakerphone capability for calls directly from the wrist
  • Stylish, traditional analog watch design that doesn't look overly techy
  • Ability to trigger phone voice commands (e.g., Siri, Google Now)
  • Useful 'leash' feature that alerts users if they leave their phone behind
  • Customizable vibration patterns for different types of notifications
  • Fast charging times and easy initial Bluetooth pairing

What customers don't like about Martian G2g

  • Questionable reliability with frequent Bluetooth connection drops
  • Tiny OLED display with very limited space for reading text
  • Poor speaker quality for voice calls in loud environments
  • Inconsistent notification delivery, particularly with some iOS versions
  • Not waterproof or splashproof, limiting use in certain conditions
  • Plastic case back feels less premium than stainless steel competitors

Verdict

The Martian G2G is a hybrid smartwatch featuring an analog quartz movement with Japanese timekeeping, a 96 x 16 pixel graphic OLED display, and a 3-axis accelerometer, all housed in a 39mm stainless steel case with a sporty silicone band. Its standout characteristics include a noise-canceling microphone and directional speaker for hands-free calls and voice commands (Siri/Google Now), Bluetooth 4.0 connectivity, and a dual-battery system providing up to 2 hours of talk time or 7 days of standby for smart features while the analog watch runs for up to 2 years. Main pros include its stylish design, remote camera shutter control, and a 'phone leash' feature to prevent loss, though it is hindered by cons such as a lack of built-in fitness tracking, limited 40-character notification scrolling, and a lack of water resistance beyond basic splashes.

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