BlueSkySea B2K QHD Dashcam review

Jeremy Wong

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Location
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Dash Cam
Viofo A119, Viofo A119S, Xiaomi Mijia, 360 J511C, etc
Author's Note: The full review can be found here. My review blog for my other reviews: jwtechreviews.com

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Thanks to BlueSkySea for providing the B2K QHD dashcam for review.


Technical Specs:
• Processor: Novatek NT96670
• Sensor: Sony IMX335 Exmor R Starvis
• Lens: F1.8 Aperture135° Wide Viewing Angle
• Resolution: 3840×2160 (not true 4K), 2560×1440 30fps, 1920×1080 30fps, 1280×720 30fps
• Support up to 256GB microSD card
• Built-in WiFi
• Built-in supercapacitor
• 1.5″ Screen
• Buffered parking mode (requires a hardwire kit)


The box
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Open box
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Content
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• B2K
• Suction mount
• Tape mount
• Short mini USB cable
• Mini USB car charger
• Electrostatic film
• User manual
 
Last edited:
B2K
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Tape mount
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Suction mount
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Short mini USB cable
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Mini USB car charger
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Electrostatic film
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User manual
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Initial firmware out of the box
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Test setup
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I will be using a 128GB Netac Pro microSD 350V card for the recordings.


KaKaOK app
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Videos
Below is recorded using firmware v20201009 in H.265 2560×1440 30fps with an overall bitrate of 16.5 Mb/s with WDR on.






Final thoughts
A nice small cube design with crisp clear videos. From the price of USD69.99 (MYR285+-) can be considered a good budget 2K dashcam.

The KakaOK app is very straight forward to use. Video streaming without any lag.

The 4K resolution is considered to non-true 4K resolution as the B2K uses a 5MP sensor, not an 8MP sensor which can record in true 4K resolution.

Regarding the buffered parking mode, I didn’t get to test it out as I didn’t have a mini USB hardwire kit for the testing.
 
Did you test its 4K resolution also?
 
Did you test its 4K resolution also?
It gives twice the bitrate in UHD, better for movies, not so good for record time.

Regarding the buffered parking mode, I didn’t get to test it out as I didn’t have a mini USB hardwire kit for the testing.
It works, triggered by g-sensor and gives a 30 second recording in the EMR folder with 10 seconds pre-trigger. Same happens if the g-sensor is activated while driving, with the buffered emergency recording being completely separate from the normal recording.

Below is recorded using firmware v20201009 in H.265 2560×1440 30fps with an overall bitrate of 16.5 Mb/s with WDR on.
Not the best of conditions, especially in the night footage, but a good test!

It has excellent image quality for a budget camera. Apart from the bitrate on the QHD recordings which is a little low for 2K, image quality is excellent for any 2K camera, it has a nice lens. The low price is due to missing features like GPS rather than image quality. Certainly a big upgrade on image quality from the B1W, especially at night when there is far less motion blur on the B2K.
 
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