Blueskysea B4K

Blueskysea B4K

The Blueskysea B4K is a Chinese single channel dash camera released in Dec 2020. Blueskysea is known for offering great bang for your buck for their dash cams. The B4K is no exception. It is a true 4K camera for $100 which is an excellent price.

While the B4K is currently being sold as a single channel dash cam, an optional 1080p rear camera can be purchased as well. There is a cube shaped camera (type A) and a tube shaped camera (type B)

The camera uses a Novatek NT96670 processor and Sony STARVIS IMX415 CMOS sensor. These are excellent components and are showing up in can many new 4K dash cams.

Video Quality

 The B4K records 2160p (4K) video at 30fps with an average bitrate of 26 Mbps. Video quality during the day is very good and night quality is good. Some of the initial videos from this camera appear to have a bit of stuttering, but this appears to be resolved with the latest firmware.

Note that the B4K records using the newer H.265 HEVC codec instead of the more common H.264 codec. H.265 may not be compatible with older computers or viewing devices which could be a problem when sharing video files with Police or insurance companies. Not a huge issue but something to be aware of.


The camera has a 3.16″ screen, which is wider than most other dash cams. It also has a g-sensor and built in GPS. The camera comes with WiFi and recommends using the Ucam app for Android and iOS. This app is simple but allows settings to be changed and videos to be downloaded. Another strong positive is that the camera comes with audio and screen error notifications.

The B4K provides buffered parking mode if you hardwire the dash cam to your vehicle (optional hardwire kit required). This will record 10 seconds before an event and 20 seconds after. Not many low priced cameras offer buffered parking mode so this is a great feature.

The camera comes with an adhesive mount and cannot swivel to record interactions at the driver or passenger windows. The B4K is a medium sized camera at 91 x 38 x 30mm. Overall build quality is good.

In summary, from a specification perspective, the B4K is packed with features for this price point:

  • 4K video
  • Capacitor
  • GPS
  • WiFi
  • Buffered parking mode
  • Audio error notifications.


Blueskysea appears to be responsive to questions and has adequate support. They also provide firmware updates which is a positive as well. Blueskysea provides a 12 month warranty which can be extended to 18 months if you register the product with them. This is better than the standard 12 month warranty for most dash cams.

Known Problems

As this camera has just been released, there are no common problems reported with this camera.

Sample Videos

Numerous Dashcamtalk members have reviewed this camera which include many sample videos and screenshots. You can see some reviews on our forum here.

Should I Purchase

The Blueskysea B4K is packs a lot of features for $100. 4K video, capacitor, GPS, Wifi, buffered parking mode and audio error alerts at this price range is unheard of.

The rectangular form factor is not as discreet as some other cameras and H.265 encoded videos might be a problem if you have older computer hardware.


Detailed Specifications

Read Review
Camera Type Single Channel
Form Factor Hanging - Rectangular
Country China
Processor Novatek NT96670
Channels 1
Screen 3.16"
Touchscreen No
G-Sensor Yes
Wi-Fi Yes
Parking Mode Buffered
Lock Files Auto or Button
Max Resolution Front 3840×2160p (4K)
Front Frames Per Second 30
Max Bitrate Front (Mbps) 26
Max Resolution Rear N/A
Rear Frames Per Second N/A
Max Bitrate Rear (Mbps) N/A
Video Format TS
Compression H.264
Diagonal Viewing Angle Front 120°
Diagonal Viewing Angle Rear N/A
SD Card Type MicroSD
Max Size (Spec) 256GB
Max Size (User) 256GB
Size Front (mm) 91 x 38 x 30
Size Rear (mm) N/A
Mount Adhesive
Power Supply 5V
Operating Temp -20°C to 70°C
Battery Capacitor
Error Notification Audio and Screen
Swivel (To Record Side Windows) No
Apps PC, Android, iOS
Cloud Connectivity No
Release Date Dec 2020
Warranty 18 months with registration
Unique Features Buffered parking mode
Advantages Good price for a 4K camera
Capacitor instead of battery
Audio error notifications
Disadvantages Low rated app
Video quality could be better, firmware updates may improve
Final Word A decent competitor for a budget 4K camera. Capacitor, buffered parking mode and audio error alerts are nice features as well.

Published: December 12, 2020

Blueskysea B4K - DashCamTalk
Blueskysea B4K

The Blueskysea is an excellent budget 4K dash cam. Capacitor, buffered parking mode and audio error alerts are nice features as well.

Product SKU: Blueskysea B4K

Product Brand: Blueskysea

Product Currency: USD

Product Price: 100

Price Valid Until: 2023-01-01

Product In-Stock: SoldOut

Editor's Rating: