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

SJCAM SJ20 review: 92 specs compared

Avg. price:~£150Video resolution:4KBattery life:120 minWaterproof depth:30 mElectronic image stabilization:yesMaximum 4K frame rate:30 fps

SJCAM SJ20 Review: Compare 92 technical specifications and 12 expert and video reviews to see how this product ranks in the Action cameras category and whether it is worth buying.

SJCAM SJ20
7.3/10

Overall score

Score
7.3/ 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 68% of models
Score components

35%

7.4

Technical score

30%

?

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

25%

7.0

Reviews score

10%

6.7

Sentiment score

â–²Better than 68% of action cameras
8.0

Value for money

Value for money
8.0/ 10
✕
What it is
An indicator that combines the action camera's overall rating with its cost.
When it matters
When you want to know how much overall quality you get for the price.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 70% of models
Score components

70%

7.3

Overall score

30%

9.7

Price

â–²Better than 70%
7.4

Technical score

Technical score
7.4/ 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 84% of models
Score components

30%

7.8

Video

22%

6.2

Photo

14%

7.8

Ruggedness & Storage

13%

7.1

Battery

11%

7.5

Connectivity & Audio

10%

8.4

Display & Design

â–²Better than 84%
7.0

Reviews score

Reviews score
7.0/ 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. 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: 7.4 for now.
Share: Reviews count 25% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 60% of models

80%

6.9

Average grade

20%

7.6

Popularity

Grades by review (12)
2 reviews: 0 with a printed score, 2 estimated from the review. 10 video reviews, each counting half as much as a written test. Reviews count 25% of the overall score.
User ratings collected online are not part of this score.
â–¼Worse than 60%
?

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
*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.

What reviewers say about the SJCAM SJ20

Based on 2 · 10

Reviewers like the screens, flexible recording modes and dual lens, but audio is weak and image quality divides opinion.
Praised
Mixed views
Criticised
Pick a topic to see who said what

What owners say about the SJCAM SJ20

Based on 39 owners sharing their experience in online comments

23%positive15%mixed62%negative

Owners like the picture quality and value, but recording failures, playback errors, and weak audio undermine confidence.

What owners dislike

  • Owners report the built-in mic sounds weak, and an external mic often picks up noise or is not recognised by the camera.7
  • Recording stops after a few minutes, around 2 to 10 minutes, with the card in use, and some owners say it stops by itself.7
  • Owners report error messages or unplayable files, and some suspect the memory card, while others say the Wi-Fi app shows distorted video.6
  • Owners call it outdated, say quality is poor compared with newer action cameras, and report weak customer support.4
  • Owners get SD card errors with 128 GB SanDisk and Ultra cards, which stop recording or make files fail.3
  • Owners report trouble connecting Wi-Fi, the camera's network not showing on their phone, and the app showing distorted video.3

Points mentioned by at least 3 owners, most mentioned first.

Loading category ranking...

Action cameras model ranking

Ranked #63 of 218 models in Action cameras (Overall score)

Technical Specifications of action camera SJCAM SJ20

Technical score
Technical score
7.4/ 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 84% of models
Score components:

30%

7.8

Video

22%

6.2

Photo

14%

7.8

Ruggedness & Storage

13%

7.1

Battery

11%

7.5

Connectivity & Audio

10%

8.4

Display & Design

7.4
Reviews score
7.0
List score
?
Value for money
Value for money
8.0/ 10
✕
What it is
An indicator that combines the action camera's overall rating with its cost.
When it matters
When you want to know how much overall quality you get for the price.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 70% of models
Score components:

70%

7.3

Overall score

30%

9.7

Price

8.0
Video resolution
4K
This action camera records video at 4K, which is higher than that of 30% of action cameras.
Maximum 4K frame rate
30 fps
Market range: <0 fps – >120 fps
This action camera has a maximum 4K frame rate of 30 fps, which is higher than that of 33% of action cameras and equal to that of 31% of action cameras.
Maximum 1080p frame rate
120 fps
Market range: <30 fps – >240 fps
This action camera has a maximum 1080p frame rate of 120 fps, which is higher than that of 56.7% of action cameras and equal to that of 24.1% of action cameras.
Video bitrate
?
Video codecs
H.265
This action camera supports the following video codecs: H.265. Its codec support is more advanced than that of 66.5% of action cameras.
Show more
What reviewers say
Photo resolution
15 MP
Market range: <8 MP – >48 MP
This action camera has a main camera resolution of 15 MP, which is higher than that of 50.3% of action cameras.
Sensor size
1/2.8"
This action camera has a sensor size of 1/2.8", which is smaller than that of 86.4% of action cameras.
Main camera aperture
f/2 f
This action camera has a main camera aperture of f/2, which is wider than that of 68.5% of action cameras and equal to that of 23.1% of action cameras.
Field of view
154 °
Market range: <128 ° – >360 °
This action camera captures a 154 ° field of view, which is narrower than 68.5% of Action cameras and equal to 2.5% of Action cameras.
Adjustable field of view
?
Show more
What reviewers say
Built-in display
yes
This action camera has a built-in display. 21.9% of Action cameras offer this.
Screen size
2.29 inch
Market range: <0 inch – >2.5 inch
This action camera has a 2.29 inch screen, which is larger than the screens on 77.1% of action cameras and the same size as the screens on 2.8% of action cameras.
Touchscreen
yes
This action camera includes a touchscreen. This feature is present on 64.6% of action cameras.
Secondary screen
yes
This action camera has a secondary screen. This feature is present on 25.6% of action cameras.
Flip-out screen
no
This action camera does not have a fully articulated screen. 2.9% of action cameras have a fully articulated screen.
Show more
What reviewers say
Wi-Fi connectivity
yes
This action camera supports Wi-Fi connectivity. This feature is present on 93.4% of action cameras.
Bluetooth version
N/A
GPS
no
This action camera does not support GPS. 14.4% of action cameras include GPS functionality.
USB Type-C
yes
This action camera features USB Type-C. This feature is present on 47% of action cameras.
USB version
?
Show more
What reviewers say
Battery life
120 min
Market range: <60 min – >162 min
This action camera runs for 120 min per charge, which is longer than the battery life of 60% of action cameras and equal to the battery life of 11.4% of action cameras.
Battery power
1,100 mAh
Market range: <700 mAh – >1.9k mAh
This action camera has a battery capacity of 1,100 mAh, which is lower than that of 57.1% of action cameras and equal to that of 3.4% of action cameras.
Charging time
?
Fast charging
yes
This action camera supports fast charging. This feature is present on 22.2% of action cameras.
Wireless charging
no
This action camera does not support wireless charging. 0.5% of action cameras support wireless charging.
Show more
What reviewers say
Waterproof depth
30 m
Market range: <0 m – >11 m
This action camera is waterproof to 30 m, which is deeper than the waterproof depth of 96.7% of action cameras.
IP rating
IPX8
This action camera has an IP rating of IPX8, which is higher than that of 18.2% of action cameras and equal to that of 42.9% of action cameras.
Maximum operating temperature
40 °C
Market range: <35 °C – >45 °C
This action camera has a maximum operating temperature of 40 °C, which is higher than that of 21.4% of action cameras and equal to that of 51.3% of action cameras.
Minimum operating temperature
?
External memory slot
yes
This action camera includes an external memory slot. This feature is present on 95.8% of action cameras.
Show more

SJCAM SJ20 vs the average action camera

246810TotalVideoPhotoDisplay & DesignConnectivity & AudioBatteryRuggedness & Storage
  • 30 m deeper waterproof depth
    This action camera has a higher waterproof depth rating than the average action camera (30 m vs 0 m). The average action camera has a waterproof depth rating of 0 m.
    30 m vs 0 m
  • Secondary screen
    This action camera has a secondary screen, the average action camera does not. 26.1% of action cameras have a secondary screen.
  • Has microphone input
    This action camera has microphone input, the average action camera does not. 40% of action cameras offer this feature.
  • 0.5 f wider main aperture
    This action camera has a lower main camera aperture than the average action camera (2 f vs 2.5 f). The average action camera main camera aperture is 2.5 f.
    2.0 f vs 2.5 f
  • Supports fast charging
    This action camera supports fast charging, the average action camera does not. 22.6% of action cameras support fast charging.
  • Built-in live streaming
    This action camera supports built-in live streaming, the average action camera does not. 33.1% of action cameras support built-in live streaming.
  • Has HDR mode
    This action camera supports HDR mode, the average action camera does not. 32.6% of action cameras include HDR.
  • Has USB Type-C
    This action camera has a USB Type-C port, the average action camera does not. 47.2% of action cameras use USB-C ports.
  • Built-in live streaming
    This action camera supports built-in live streaming, the average action camera does not. 33.1% of action cameras support built-in live streaming.
  • Has HDR mode
    This action camera supports HDR mode, the average action camera does not. 32.6% of action cameras include HDR.
  • Better video codecs
    This action camera supports better video codecs than the average action camera (H.265 vs H.264). The average action camera supports H.264 video codecs.
    H.265 vs H.264
  • 60 fps higher 1080p frame rate
    This action camera has a higher 1080p frame rate than the average action camera (120 fps vs 60 fps). The average action camera reaches 60 fps at 1080p.
    120 fps vs 60 fps
  • 5 years newer release date
    This action camera is newer than the average action camera (2024 vs 2019). The average action camera was released in 2019.
    2024 vs 2019
  • 0.5 f wider main aperture
    This action camera has a lower main camera aperture than the average action camera (2 f vs 2.5 f). The average action camera main camera aperture is 2.5 f.
    2.0 f vs 2.5 f
  • Has a multi-lens main camera
    This action camera has a multi-lens main camera setup, the average action camera does not. 14.9% of action cameras include multi-lens setups.
  • Secondary screen
    This action camera has a secondary screen, the average action camera does not. 26.1% of action cameras have a secondary screen.
  • 14.5% larger screen size
    This action camera has a higher screen size than the average action camera (2.3 inch vs 2 inch). The average action camera has a screen size of 2 inch.
    2.29 inch vs 2 inch
  • 20.4% lighter
    This action camera is lighter than the average action camera (78 g vs 98 g). The average action camera weighs 98 g.
    78 g vs 98 g
  • Has microphone input
    This action camera has microphone input, the average action camera does not. 40% of action cameras offer this feature.
  • Has USB Type-C
    This action camera has a USB Type-C port, the average action camera does not. 47.2% of action cameras use USB-C ports.
  • Supports fast charging
    This action camera supports fast charging, the average action camera does not. 22.6% of action cameras support fast charging.
  • 25 min longer battery life
    This action camera has longer battery life than the average action camera (120 min vs 95 min). The average action camera offers 95 min of battery life.
    120 min vs 95 min
  • 30 m deeper waterproof depth
    This action camera has a higher waterproof depth rating than the average action camera (30 m vs 0 m). The average action camera has a waterproof depth rating of 0 m.
    30 m vs 0 m
  • Better IP rating
    This action camera has a higher IP rating than the average action camera (IPX8 vs IPX4). The average action camera has an IP rating of IPX4.
    IPX8 vs IPX4
  • Lower sensor size
    This action camera has sensor size of 1/2.8", lower than the average action camera (1/2.3").
    1/2.8" vs 1/2.3"
  • 16 ° narrower field of view
    This action camera has a narrower field of view than the average action camera (154 ° vs 170 °). The average Action camera has a field of view of 170 °.
    154 ° vs 170 °
  • 1 fewer microphones
    This action camera has fewer microphones than the average action camera (1 vs 2). The average action camera has 2 microphones.
    1 vs 2
  • 11.5 mm wider
    This action camera is wider than the average action camera (70.5 mm vs 59 mm). The average action camera has a width of 59 mm.
    70.5 mm vs 59 mm
  • 100 mAh less battery capacity
    This action camera has a lower battery capacity than the average action camera (1,100 mAh vs 1,200 mAh). The average action camera has a battery capacity of 1,200 mAh.
    1,100 mAh vs 1,200 mAh
  • 10 mm taller
    This action camera is taller than the average action camera (55 mm vs 45 mm). The average action camera has a height of 45 mm.
    55 mm vs 45 mm
  • 9.5% lower sentiment score
    6.7 vs 7.4
  • 9.5% lower sentiment score
    6.7 vs 7.4
  • Lower sensor size
    This action camera has sensor size of 1/2.8", lower than the average action camera (1/2.3").
    1/2.8" vs 1/2.3"
  • 16 ° narrower field of view
    This action camera has a narrower field of view than the average action camera (154 ° vs 170 °). The average Action camera has a field of view of 170 °.
    154 ° vs 170 °
  • 11.5 mm wider
    This action camera is wider than the average action camera (70.5 mm vs 59 mm). The average action camera has a width of 59 mm.
    70.5 mm vs 59 mm
  • 10 mm taller
    This action camera is taller than the average action camera (55 mm vs 45 mm). The average action camera has a height of 45 mm.
    55 mm vs 45 mm
  • 1 fewer microphones
    This action camera has fewer microphones than the average action camera (1 vs 2). The average action camera has 2 microphones.
    1 vs 2
  • 100 mAh less battery capacity
    This action camera has a lower battery capacity than the average action camera (1,100 mAh vs 1,200 mAh). The average action camera has a battery capacity of 1,200 mAh.
    1,100 mAh vs 1,200 mAh

Video reviews

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

4.0
Feast Ones Eyes On Goodies
≈ estimated
09/01/2026
Hands-on review · day, night and bike tests, app problems
Verdict
SJCAM SJ20 was sent back after the app would not connect, though a good unit might be fine.
9.0
IAmIanMakia
≈ estimated
12/12/2025
Hands-on review · dual-lens daytime and night footage
Verdict
SJCAM SJ20 is a strong rival to established brands and is recommended for biking, travel and sports despite its weak mic.
6.0
Geekman (Tech)
≈ estimated
25/10/2025
Hands-on review · day, night and stability tests
Verdict
SJCAM SJ20 is an average action camera, fine for casual trips but overpriced for what it offers.
8.0
Techiebeez India
≈ estimated
16/04/2025
Full review · unboxing, real-world tests and battery
Verdict
SJCAM SJ20 is a reasonably good, value-for-money action camera at this price, though stabilization could be better.
8.0
PIXEL VIILAGE
≈ estimated
20/06/2024
Hands-on review · video, photo, battery and app tests
Verdict
SJCAM SJ20 is a solid, affordable dual-lens camera that is well rounded, though low light and audio are weak.
4.0
TechMishka
≈ estimated
24/03/2024
Hands-on review · low-light, image and feature tests
Verdict
SJCAM SJ20 is a hard pass, with image quality and low-light performance well behind current rivals and its own claims.
4.0
Phillip Skraba
≈ estimated
31/01/2024
Hands-on comparison · night, photo and usability tests
Verdict
SJCAM SJ20 is not recommended: it feels unpolished, is hard to use and needs a lot more work.
Overview video
Hands-on video, no verdict
Hands-on video, no verdict
Not graded
Brand video

Expert reviews

In-depth analysis and verdict from leading tech publications

6.0
theashugandhi.com
≈ estimated
Not Dated
Written review · Dual-camera design
Verdict
The SJCAM SJ20 gives clear daylight 4K footage, but weak low-light video and average stabilization hold it back for action sports.
7.0
smartzone.de
≈ estimated
24/04/2025
Hands-on test · Dual-lens design
Verdict
The SJCAM SJ20 is a well-built dual-lens camera with decent video, but its frustrating app and fiddly port door hold it back.

Third-party reviews

What customers like about SJCAM SJ20

  • Two lenses switch between day and night, automatically or by hand.
  • Waterproof to 30 m and rated IPX8.
  • At 78 g it is easy to wear on a helmet or handlebar.
  • The rear 2.29 inch touchscreen is bright and responsive.
  • Fast charging over USB-C saves time.
  • An extra grip battery adds much more runtime.

What customers don't like about SJCAM SJ20

  • Still photos are weak.
  • The built-in audio is nothing special, though a microphone input is there.
  • Digital zoom quality drops off quickly beyond 2x.
  • The app looks dated.
  • The timestamp is on by default and has to be turned off.

Verdict

At 78 g, the SJCAM SJ20 is easy to carry on a bike or a long walk. Its main draw is a dual lens with a fast f/1.3 night lens that switches over automatically or by hand. The night lens makes a clear difference in the dark. It is rated to 30 m underwater and IPX8, so snorkelling and water sports are covered. Its 2.29 inch touchscreen is bright and responsive. The battery lasts 120 min, and an extra grip battery adds much more time. The USB-C port charges it quickly. The trade-off is quality: still photos are weak, and the built-in audio is nothing special. It suits a buyer who films at night and in the water, and does not mind an app that feels dated.

Compare SJCAM SJ20 with other products in the Action cameras category

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