OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
Scored using Fitness trackers Methodology v3.0
Fitness trackers Methodology v3.0
Mathematical & Unbiased Scoring
Products in this category are scored under Frontum Fitness trackers 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 Fitness trackers Methodology v3.0

KSIX Serena review: 163 specs compared

Avg. price:~£55Battery life:7 daysScreen size:0.97 inchHeart rate monitor:yesGPS:noWaterproof depth rating:50 m

KSIX Serena Review: Compare 168 technical specifications to see how this product ranks in the Fitness trackers category and whether it is worth buying.

KSIX Serena
7.5/10

Overall score

Score
7.5/ 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
â–¼
<55-66-77-88-99-10
â–² Better than 66% of models
Score components

35%

7.7

Technical score

30%

?

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

25%

?

Reviews scoreNot enough data yet, so we use 7.2, the mark of a weaker model in this category

10%

?

Sentiment scoreNot enough data yet, so we use 7.1, the mark of a weaker model in this category

â–²Better than 66% of fitness trackers
8.2

Value for money

Value for money
8.2/ 10
✕
What it is
An indicator that combines the fitness tracker's overall rating with its cost.
When it matters
When you are looking for a fitness tracker with a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 61% of models
Score components

70%

7.5

Overall score

30%

10

Price

â–²Better than 61%
7.7

Technical score

Technical score
7.7/ 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–² Better than 82% of models
Score components

20%

8.8

Sports

20%

3.6

Battery

18%

9.1

Health

18%

8.2

Display

8%

8.9

Smart functions

8%

9.5

Wellness

4%

7.8

Connectivity

4%

9.2

Design

â–²Better than 82%
?

Reviews score

Reviews score
✕
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. Big test sites count more, short reviews half as much as full tests. A video review counts half.
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: 7.2 for now.
Share: Reviews count 25% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
Grades by review (0)
We have not found an independent test of this model yet. Until we do, its review part counts as 7.2.
User ratings collected online are not part of this score.
No expert tests yet
?

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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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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Fitness trackers model ranking

Ranked #68 of 238 models in Fitness trackers (Overall score)

Technical Specifications of fitness tracker KSIX Serena

Technical score
Technical score
7.7/ 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–² Better than 82% of models
Score components:

20%

8.8

Sports

20%

3.6

Battery

18%

9.1

Health

18%

8.2

Display

8%

8.9

Smart functions

8%

9.5

Wellness

4%

7.8

Connectivity

4%

9.2

Design

7.7
Reviews score
7.2
List score
?
Value for money
Value for money
8.2/ 10
✕
What it is
An indicator that combines the fitness tracker's overall rating with its cost.
When it matters
When you are looking for a fitness tracker with a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 61% of models
Score components:

70%

7.5

Overall score

30%

10

Price

8.2
Heart rate monitor
yes
This fitness tracker supports heart rate monitoring. 36.2% of fitness trackers support heart rate monitoring.
Resting heart rate
yes
This fitness tracker supports Resting heart rate. 47.5% of fitness trackers support Resting heart rate.
Fast/slow heart rate alerts
yes
This fitness tracker supports high and low heart rate alerts. 63.9% of fitness trackers support high and low heart rate alerts.
Irregular heart rate alerts
?
Blood oxygen sensor
yes
This fitness tracker has a blood oxygen sensor. 68.2% of fitness trackers have a blood oxygen sensor.
Show more
GPS
no
This fitness tracker does not have GPS. 12.7% of fitness trackers have GPS.
Satellite systems supported
no
This fitness tracker supports no satellite systems which is less versatile than that of 14.4% of fitness trackers and the same as that of 85.6% of fitness trackers.
GNSS bands supported
no
This fitness tracker does not support advanced GNSS bands. 8.4% of fitness trackers support advanced GNSS bands.
Galileo support
no
This fitness tracker does not support Galileo. 5.6% of fitness trackers support Galileo.
Acquires GPS faster
no
This fitness tracker does not support faster GPS acquisition. 8.1% of fitness trackers support faster GPS acquisition.
Show more
Notifications
yes
This fitness tracker supports notifications. 27.8% of fitness trackers support notifications.
Vibrating alerts
yes
This fitness tracker supports vibration alerts. 14.3% of fitness trackers support vibration alerts.
Call control
yes
This fitness tracker supports call controls. 59.7% of fitness trackers support call controls.
Call answering
no
This fitness tracker does not support call answering. 0.9% of fitness trackers support call answering.
Calendar sync
?
Show more
Activity reports
yes
This fitness tracker supports activity reports. 5% of fitness trackers support activity reports.
Goal setting
yes
This fitness tracker supports goal setting. 2.5% of fitness trackers support goal setting.
Achievements
?
Inactivity alerts
yes
This fitness tracker supports inactivity alerts. 21.4% of fitness trackers support inactivity alerts.
Coaching
yes
This fitness tracker supports coaching. 64% of fitness trackers support coaching.
Show more
Bluetooth version
5.3
This fitness tracker supports Bluetooth 5.3 which is newer than in 93.2% of fitness trackers and equal to that in 3.2% of fitness trackers.
Maximum Bluetooth range
10 m
Market range: <8 m – >23 m
This fitness tracker offers a Bluetooth range of 10 m which is higher than that of 14.9% of fitness trackers and equal to that of 64.5% of fitness trackers.
NFC
no
This fitness tracker does not have NFC. 11.8% of fitness trackers have NFC.
Wi-Fi connectivity
no
This fitness tracker does not support Wi-Fi. 2.5% of fitness trackers support Wi-Fi.
Wi-Fi version
no
This fitness tracker does not support modern Wi-Fi. 0.9% of fitness trackers support modern Wi-Fi.
Show more
Battery life
7 days
Market range: <5 days – >180 days
This fitness tracker offers a battery life of 7 days which is shorter than that of 56.1% of fitness trackers and equal to that of 21.9% of fitness trackers.
Battery life with GPS on
N/A
Battery life in training mode
?
Power-saving battery life
?
Battery capacity
18 mAh
Market range: <30 mAh – >225 mAh
This fitness tracker has a battery capacity of 18 mAh which is lower than that of 98.8% of fitness trackers.
Show more
Display
yes
This fitness tracker has a display. 26.3% of fitness trackers have a display.
Screen size
0.97 inch
Market range: <0 inch – >1.6 inch
This fitness tracker has a screen size of 0.97 inch which is smaller than that of 55.1% of fitness trackers.
Display type
AMOLED
This fitness tracker uses AMOLED display technology which is more advanced than that of 74.1% of fitness trackers and the same as that of 25.9% of fitness trackers.
Screen resolution
194x 368
This fitness tracker has a screen resolution of 194x368 which is higher than that of 86.7% of fitness trackers and equal to that of 4.1% of fitness trackers.
Pixel density
?
Show more
Form factor
wristband
Hybrid design
no
This fitness tracker does not support Hybrid design. 2.1% of fitness trackers support Hybrid design.
Designed for kids
no
This fitness tracker is not designed for kids. 3.3% of fitness trackers are designed for kids.
Replaceable watch band
yes
This fitness tracker has a replaceable watch band. 23.4% of fitness trackers have a replaceable watch band.
Band width
?
Show more

KSIX Serena vs the average fitness tracker

246810TotalHealthSportsBatteryDisplayConnectivitySmart functionsDesignWellness
  • Blood oxygen monitoring
    This fitness tracker has a blood oxygen sensor, while the average fitness tracker does not. 32.1% of fitness trackers have a blood oxygen sensor.
  • Measures VO2 max
    This fitness tracker supports VO2 max tracking, while the average fitness tracker does not. 23.6% of fitness trackers support VO2 max tracking.
  • Multi-sport mode
    This fitness tracker supports multi-sport mode, while the average fitness tracker does not. 14.5% of fitness trackers support multi-sport mode.
  • Touchscreen
    This fitness tracker has a touchscreen, while the average fitness tracker does not. 46.7% of fitness trackers have a touchscreen.
  • Swim stroke counter
    This fitness tracker supports swim stroke counting, while the average fitness tracker does not. 22.3% of fitness trackers support swim stroke counting.
  • Coaching features
    This fitness tracker supports coaching, while the average fitness tracker does not. 36.3% of fitness trackers support coaching.
  • Heart rate alerts
    This fitness tracker supports high and low heart rate alerts, while the average fitness tracker does not. 36.4% of fitness trackers support high and low heart rate alerts.
  • Continuous SpOâ‚‚ monitoring
    This fitness tracker supports continuous SpOâ‚‚ monitoring, while the average fitness tracker does not. 16.3% of fitness trackers support continuous SpOâ‚‚ monitoring.
  • Blood oxygen monitoring
    This fitness tracker has a blood oxygen sensor, while the average fitness tracker does not. 32.1% of fitness trackers have a blood oxygen sensor.
  • Measures VO2 max
    This fitness tracker supports VO2 max tracking, while the average fitness tracker does not. 23.6% of fitness trackers support VO2 max tracking.
  • Heart rate alerts
    This fitness tracker supports high and low heart rate alerts, while the average fitness tracker does not. 36.4% of fitness trackers support high and low heart rate alerts.
  • Continuous SpOâ‚‚ monitoring
    This fitness tracker supports continuous SpOâ‚‚ monitoring, while the average fitness tracker does not. 16.3% of fitness trackers support continuous SpOâ‚‚ monitoring.
  • Tracks menstrual cycle
    This fitness tracker supports menstrual cycle tracking, while the average fitness tracker does not. 45.2% of fitness trackers support menstrual cycle tracking.
  • Period notifications
    This fitness tracker has period notifications, while the average fitness tracker does not. 34.6% of fitness trackers have period notifications.
  • Fertile window notifications
    This fitness tracker displays fertile window notifications, while the average fitness tracker does not. 25.1% of fitness trackers display fertile window notifications.
  • Ovulation prediction
    This fitness tracker predicts ovulation, while the average fitness tracker does not. 44.1% of fitness trackers predict ovulation.
  • Cycle start prediction
    This fitness tracker predicts the start date, while the average fitness tracker does not. 45.8% of fitness trackers predict the start date.
  • Multi-sport mode
    This fitness tracker supports multi-sport mode, while the average fitness tracker does not. 14.5% of fitness trackers support multi-sport mode.
  • Swim stroke counter
    This fitness tracker supports swim stroke counting, while the average fitness tracker does not. 22.3% of fitness trackers support swim stroke counting.
  • Recovery time advisor
    This fitness tracker supports recovery time guidance, while the average fitness tracker does not. 14% of fitness trackers support recovery time guidance.
  • Tracks training load
    This fitness tracker supports training load tracking, while the average fitness tracker does not. 19.9% of fitness trackers support training load tracking.
  • Built-in gyroscope
    This fitness tracker has a gyroscope, while the average fitness tracker does not. 28.7% of fitness trackers have a gyroscope.
  • 91.5 more exercise modes
    This fitness tracker has more exercise modes than the average fitness tracker (100 vs 8.5). The average fitness tracker offers 8.5 exercise modes.
    100 vs 8.5
  • Touchscreen
    This fitness tracker has a touchscreen, while the average fitness tracker does not. 46.7% of fitness trackers have a touchscreen.
  • Color display
    This fitness tracker has a color display, while the average fitness tracker does not. 39.1% of fitness trackers have a color display.
  • Modern Bluetooth version
    This fitness tracker supports a newer Bluetooth version than the average fitness tracker (5.3 vs 4.1). The average fitness tracker supports Bluetooth 4.1.
    5.3 vs 4.1
  • Passcode protection
    This fitness tracker supports passcode protection, while the average fitness tracker does not. 17.6% of fitness trackers support passcode protection.
  • Call control
    This fitness tracker supports call controls, while the average fitness tracker does not. 40.6% of fitness trackers support call controls.
  • 1 more physical buttons
    This fitness tracker has a higher physical buttons than the average fitness tracker (1 vs 0). The average fitness tracker has 0 of physical buttons.
    1 vs 0
  • Camera remote control
    This fitness tracker supports camera remote control, while the average fitness tracker does not. 40.6% of fitness trackers support camera remote control.
  • 16.7% lighter
    This fitness tracker is lighter than the average fitness tracker (20 g vs 24 g). The average fitness tracker weighs 24 g.
    20 g vs 24 g
  • Coaching features
    This fitness tracker supports coaching, while the average fitness tracker does not. 36.3% of fitness trackers support coaching.
  • 85.6% smaller battery capacity
    This fitness tracker has a lower battery capacity than the average fitness tracker (18 mAh vs 125 mAh). The average fitness tracker has 125 mAh of battery capacity.
    18 mAh vs 125 mAh
  • 0.5 hours longer charging time
    This fitness tracker has a higher charging time than the average fitness tracker (2 hours vs 1.5 hours). The average fitness tracker needs 1.5 hours to charge.
    2 hours vs 1.5 hours
  • 3 days shorter battery life
    This fitness tracker has a lower battery life than the average fitness tracker (7 days vs 10 days). The average fitness tracker has 10 days of battery life.
    7 days vs 10 days
  • 0.09 inch smaller screen size
    This fitness tracker has a lower screen size than the average fitness tracker (1 inch vs 1.06 inch). The average fitness tracker has a screen size of 1.06 inch.
    0.97 inch vs 1.06 inch
  • 85.6% smaller battery capacity
    This fitness tracker has a lower battery capacity than the average fitness tracker (18 mAh vs 125 mAh). The average fitness tracker has 125 mAh of battery capacity.
    18 mAh vs 125 mAh
  • 0.5 hours longer charging time
    This fitness tracker has a higher charging time than the average fitness tracker (2 hours vs 1.5 hours). The average fitness tracker needs 1.5 hours to charge.
    2 hours vs 1.5 hours
  • 3 days shorter battery life
    This fitness tracker has a lower battery life than the average fitness tracker (7 days vs 10 days). The average fitness tracker has 10 days of battery life.
    7 days vs 10 days
  • 0.09 inch smaller screen size
    This fitness tracker has a lower screen size than the average fitness tracker (1 inch vs 1.06 inch). The average fitness tracker has a screen size of 1.06 inch.
    0.97 inch vs 1.06 inch

Third-party reviews

What we like about KSIX Serena

  • 100 exercises give a wide choice in one watch.
  • Multi-sport mode lets you switch between sports during a workout.
  • The 5 ATM and 50 m rating covers swimming.
  • At 20 g it is light for a watch with a display.
  • The camera remote control takes photos from the wrist.
  • A replaceable watch band lets you swap the strap.

What we don't like about KSIX Serena

  • Battery life is 7 days, so charging is a weekly job.
  • A full charge takes 2 hours.
  • The 0.97 inch screen is small for reading long data.
  • A small 18 mAh cell leaves little room for long days.

Verdict

For people who train in many different sports, the KSIX Serena is worth a look. Its 100 exercises and multi-sport mode cover plenty of ground, from a swim to a gym session. The 5 ATM and 50 m rating means it can stay on through a pool session. It weighs 20 g and has a display that shows distance, pace and heart rate. Step, calorie and sleep tracking cover everyday use. The trade-off is the battery. With a small 18 mAh cell, it runs 7 days, so you will charge it about once a week, and each charge takes 2 hours. The 0.97 inch screen is also small, so it suits quick checks more than long reading. It suits someone who trains in several sports and does not mind a weekly charge.

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