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

Mykronoz ZeRound3 review: 127 specs compared

Avg. price:~£70Screen size:1.20 inchBattery life:5 daysDisplay type:AMOLED

Mykronoz ZeRound3 Review: Compare 127 technical specifications and 1 expert reviews to see how this product ranks in the Smartwatches category and whether it is worth buying.

Mykronoz ZeRound3
5.9/10

Overall score

Score
5.9/ 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 88% of models
Score components

35%

5.0

Technical score

30%

?

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

25%

5.0

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 88% of smartwatches
7.2

Value for money

Value for money
7.2/ 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 85% of models
Score components

70%

5.9

Overall score

30%

10

Price

â–¼Worse than 85%
5.0

Technical score

Technical score
5.0/ 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 85% of models
Score components

24%

3.2

Health

21%

6.3

Fitness

16%

6.2

Battery

14%

6.0

Smart features

12%

2.6

Connectivity

9%

6.1

Display & Design

4%

5.7

Hardware

â–¼Worse than 85%
5.0

Reviews score

Reviews score
5.0/ 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 90% of models

5.0

Mark 7.4 is below the typical mark 7.9 of this category, so it cannot lift the score above the technical score

80%

8.0

Average grade

20%

5.0

Popularity

Grades by review (1)
1 review: 7.9/10. We use 5 reviews; the 4 missing count as the category's typical 8.0: (7.9 × 1 + 8.0 × 4) ÷ 5 = 8.0. Reviews count 25% of the overall score.
User ratings collected online are not part of this score.
â–¼Worse than 90%
?

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
  • mykronoz-zeround3
  • mykronoz-zeround3
  • mykronoz-zeround3
  • mykronoz-zeround3
mykronoz-zeround3
mykronoz-zeround3
mykronoz-zeround3
mykronoz-zeround3
Where to buy
*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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Technical Specifications of smartwatch Mykronoz ZeRound3

Technical score
Technical score
5.0/ 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 85% of models
Score components:

24%

3.2

Health

21%

6.3

Fitness

16%

6.2

Battery

14%

6.0

Smart features

12%

2.6

Connectivity

9%

6.1

Display & Design

4%

5.7

Hardware

5.0
Reviews score
5.0
List score
?
Value for money
Value for money
7.2/ 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 85% of models
Score components:

70%

5.9

Overall score

30%

10

Price

7.2
Heart rate monitor
yes
This smartwatch includes a heart rate monitor. 9.5% 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
no
This smartwatch does not support HRV tracking. 45.2% 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
no
This smartwatch does not include a gyroscope. 71.3% of smartwatches include a gyroscope.
Cadence sensor
no
This smartwatch does not include a cadence sensor. 32.9% of smartwatches include a cadence sensor.
Distance tracking
yes
This smartwatch supports distance tracking. 3.7% of smartwatches support distance tracking.
Show more
Battery life
5 days
Market range: <1 day – >20 days
This smartwatch lasts 5 days on a charge, which is shorter than 65.9% of Smartwatches and the same as 6.1% of Smartwatches.
Battery life in training mode
48 h
Market range: <6 h – >48 h
This smartwatch records workouts for 48 h on a charge, which is longer than 88.6% of Smartwatches and the same as 2.5% of Smartwatches.
Battery life with GPS on
N/A
Battery power
305 mAh
Market range: <200 mAh – >500 mAh
This smartwatch has a 305 mAh battery, which is larger than 49% of Smartwatches and the same as 1.2% of Smartwatches.
Charge time
90 min
Market range: <60 min – >150 min
This smartwatch charges from empty in 90 min, which is quicker than 64.4% of Smartwatches and the same as 9.9% 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
?
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
1.2 inch
Market range: <1.2 inch – >1.83 inch
This smartwatch has a 1.2 inch screen, which is smaller than 84.6% of Smartwatches and the same as 8.1% 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
390x 390
This smartwatch has a display resolution of 390x390 which is higher than that of 56.8% of smartwatches and equal to that of 6% of smartwatches.
Pixel density
460 ppi
Market range: <213 ppi – >461 ppi
This smartwatch has a pixel density of 460 ppi, which is higher than 80.1% of Smartwatches and equal to 4.8% of Smartwatches.
Display brightness
?
Show more
CPU speed
0.022 GHz
This smartwatch uses a CPU configuration of 0.022 GHz which is slower than that in 98.8% of smartwatches and equal to that in 1.2% of smartwatches.
Processor model
?
RAM
?
Internal storage
0.256 GB
Market range: <0 GB – >32 GB
This smartwatch has 0.256 GB of internal storage, which is less than 65.7% of Smartwatches and equal to 0.7% of Smartwatches.
256 MB internal storage.
External memory slot
no
This smartwatch does not include an external memory slot. 0.3% of smartwatches include an external memory slot.
Show more

Mykronoz ZeRound3 vs the average smartwatch

246810TotalHealthFitnessBatteryConnectivityDisplay & DesignSmart featuresHardware
  • 28 h longer training battery life
    This smartwatch lasts longer in training mode than the average smartwatch (48 h vs 20 h). The average smartwatch lasts 20 h in training mode.
    48 h vs 20 h
  • 30 min quicker charging
    This smartwatch charges faster than the average smartwatch (90 min vs 120 min). The average smartwatch takes 120 min to charge from empty.
    90 min vs 120 min
  • Calorie tracking
    This smartwatch supports calorie tracking, the average smartwatch does not. 48.7% of smartwatches support calorie tracking.
  • Rugged construction
    This smartwatch has a rugged design, the average smartwatch does not. 41.2% of smartwatches have a rugged design.
  • 134 ppi sharper screen
    This smartwatch has a sharper screen than the average smartwatch (460 ppi vs 326 ppi). The average smartwatch has a pixel density of 326 ppi.
    460 ppi vs 326 ppi
  • 15 °C higher heat tolerance
    This smartwatch tolerates a higher temperature than the average smartwatch (60 °C vs 45 °C). The average smartwatch is rated up to 45 °C.
    60 °C vs 45 °C
  • Calorie tracking
    This smartwatch supports calorie tracking, the average smartwatch does not. 48.7% of smartwatches support calorie tracking.
  • 28 h longer training battery life
    This smartwatch lasts longer in training mode than the average smartwatch (48 h vs 20 h). The average smartwatch lasts 20 h in training mode.
    48 h vs 20 h
  • 30 min quicker charging
    This smartwatch charges faster than the average smartwatch (90 min vs 120 min). The average smartwatch takes 120 min to charge from empty.
    90 min vs 120 min
  • Rugged construction
    This smartwatch has a rugged design, the average smartwatch does not. 41.2% of smartwatches have a rugged design.
  • 134 ppi sharper screen
    This smartwatch has a sharper screen than the average smartwatch (460 ppi vs 326 ppi). The average smartwatch has a pixel density of 326 ppi.
    460 ppi vs 326 ppi
  • 15 °C higher heat tolerance
    This smartwatch tolerates a higher temperature than the average smartwatch (60 °C vs 45 °C). The average smartwatch is rated up to 45 °C.
    60 °C vs 45 °C
  • No VO2 max measurement
    This smartwatch does not measure VO2 max, the average smartwatch does. 51.3% of smartwatches measure VO2 max.
  • 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.
  • 28.6% lower review score
    Reviews score
    5.0/ 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 90% of models

    5.0

    Mark 7.4 is below the typical mark 7.9 of this category, so it cannot lift the score above the technical score

    80%

    8.0

    Average grade

    20%

    5.0

    Popularity

    Grades by review (1)
    1 review: 7.9/10. We use 5 reviews; the 4 missing count as the category's typical 8.0: (7.9 × 1 + 8.0 × 4) ÷ 5 = 8.0. Reviews count 25% of the overall score.
    User ratings collected online are not part of this score.
    5.0 vs 7.0
  • No stress monitoring
    This smartwatch does not support stress monitoring, the average smartwatch does. 68.7% of smartwatches support stress monitoring.
  • 49 m shallower water rating
    This smartwatch is rated for shallower water than the average smartwatch (1 m vs 50 m). The average smartwatch is rated to 50 m.
    Based on IP immersion rating (controlled lab conditions, not a swim/diving certification).
    1 m vs 50 m
  • 28.6% lower review score
    Reviews score
    5.0/ 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 90% of models

    5.0

    Mark 7.4 is below the typical mark 7.9 of this category, so it cannot lift the score above the technical score

    80%

    8.0

    Average grade

    20%

    5.0

    Popularity

    Grades by review (1)
    1 review: 7.9/10. We use 5 reviews; the 4 missing count as the category's typical 8.0: (7.9 × 1 + 8.0 × 4) ÷ 5 = 8.0. Reviews count 25% of the overall score.
    User ratings collected online are not part of this score.
    5.0 vs 7.0
  • 8.4% worse value for money
    Mykronoz ZeRound3 has a lower value-for-money score than the average smartwatch (7.16 vs 7.8).
    7.16 vs 7.76
  • No VO2 max measurement
    This smartwatch does not measure VO2 max, the average smartwatch does. 51.3% of smartwatches measure VO2 max.
  • 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 cycle tracking
    This smartwatch does not support menstrual cycle tracking, the average smartwatch does. 66.8% of smartwatches support menstrual cycle tracking.
  • No smart scale support
    This smartwatch does not support smart scale compatibility, the average smartwatch does. 57.1% of smartwatches support smart scale compatibility.
  • 2 years older
    This smartwatch was released earlier than the average smartwatch (2019 vs 2021). The average smartwatch was released in 2021.
    July 2019
    2019 vs 2021
  • 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 coaching features
    This smartwatch does not support coaching, the average smartwatch does. 58.8% of smartwatches support coaching.
  • No gyroscope
    This smartwatch does not include a gyroscope, the average smartwatch does. 71.2% of smartwatches include a gyroscope.
  • No auto-pause
    This smartwatch does not support auto pause, the average smartwatch does. 62.6% of smartwatches support auto pause.
  • No route support
    This smartwatch does not support route support, the average smartwatch does. 54.4% of smartwatches support route support.
  • No live tracking
    This smartwatch does not support live tracking, the average smartwatch does. 89.5% of smartwatches support live tracking.
  • 83 fewer exercise types
    This smartwatch includes fewer exercise types than the average smartwatch (7 vs 90). The average smartwatch includes 90 exercise types.
    7 vs 90
  • Basic battery type
    This smartwatch uses a Li-ion battery, while the average smartwatch uses Li-Po.
    Li-ion vs Li-Po
  • 2 days shorter battery life
    This smartwatch runs for less time per charge than the average smartwatch (5 days vs 7 days). The average smartwatch runs for 7 days on a charge.
    5 days vs 7 days
  • 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.
  • 49 m shallower water rating
    This smartwatch is rated for shallower water than the average smartwatch (1 m vs 50 m). The average smartwatch is rated to 50 m.
    Based on IP immersion rating (controlled lab conditions, not a swim/diving certification).
    1 m vs 50 m
  • 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.
  • Weaker ingress protection
    This smartwatch has weaker ingress protection than the average smartwatch (IP67 vs IP68).
    IP67 vs IP68
  • 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.
  • 0.2 inch smaller display
    This smartwatch has a smaller screen than the average smartwatch (1.2 inch vs 1.4 inch). The average smartwatch has a 1.4 inch screen.
    1.2 inch vs 1.4 inch
  • 12 g heavier
    This smartwatch is heavier than the average smartwatch (57 g vs 45 g). The average smartwatch weighs 45 g.
    57 g vs 45 g
  • 0.9 mm thicker
    This smartwatch is thicker than the average smartwatch (12.6 mm vs 11.7 mm). The average smartwatch is 11.7 mm thick.
    12.6 mm vs 11.7 mm
  • 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 widget support
    This smartwatch does not support widgets, the average smartwatch does. 84.4% of smartwatches support widgets.
  • No gesture control
    This smartwatch does not support gesture control, the average smartwatch does. 79.6% of smartwatches support gesture control.
  • 93.6% less internal storage
    This smartwatch has less internal storage than the average smartwatch (0.3 GB vs 4 GB). The average smartwatch has 4 GB of internal storage.
    256 MB internal storage.
    0.256 GB vs 4 GB
  • Slower CPU speed
    This smartwatch uses a CPU configuration of 0.022 GHz, while the average smartwatch uses 1 GHz.
    0.022 GHz vs 1 GHz

Expert reviews

In-depth analysis and verdict from leading tech publications

7.9
keengamer.com
✓ explicit
15/07/2019
Hands-on review · Compact smartwatch
Verdict
The MyKronoz ZeRound 3 is a light, bright all-rounder with good battery life, but its limited watch faces and frequent app disconnects hold it back.

Third-party reviews

What customers like about Mykronoz ZeRound3

  • High-quality, vibrant AMOLED display with sharp 390x390 resolution
  • Solid battery life typically lasting 3 to 5 days on a single charge
  • Lightweight and comfortable design suitable for long-term wear
  • Highly affordable price point compared to major competitors
  • Good range of features including heart rate monitoring and sleep tracking
  • Functional built-in microphone and speaker for handling calls

What customers don't like about Mykronoz ZeRound3

  • Frequent Bluetooth disconnection issues between the watch and smartphone
  • Difficult and time-consuming initial pairing process using QR codes
  • Glitchy companion app with limited software support and frequent bugs
  • Touchscreen responsiveness can be inconsistent or laggy for some users
  • Uninspired or 'generic' aesthetic according to some design-focused reviews
  • Notifications can be unreliable due to syncing problems with the app

Verdict

The Mykronoz ZeRound3 is a high-resolution smartwatch featuring a 1.2-inch circular AMOLED touchscreen with 390 x 390 px resolution, an IP67 water-resistance rating, and a 350 mAh battery offering up to five days of standby time. Its core functionality includes integrated 24/7 optical heart rate monitoring, a 3-axis accelerometer for tracking steps and calories, and a built-in microphone and speaker for making Bluetooth calls directly from the wrist. Main pros include its vibrant, sunlight-readable display, sleek Swiss-designed metal frame with interchangeable 22mm bands, and broad compatibility with both iOS and Android via a dedicated companion app. However, users may encounter cons such as the lack of built-in GPS, occasional Bluetooth disconnection issues with app notifications, and a somewhat long initial pairing process.

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