Kingslim D4

Kingslim D4

The Kingslim D4 is a Chinese dual channel dash camera released in Jul 2020. The Kingslim brand is trademarked by a Chinese company named HKSO Technology. This low priced dual dash cam has been gaining popularity on Amazon.

The Kingslim D4 is based on the HiSilicon Hi3556 processor. It uses a Sony Starvis IMX335 CMOS sensor for the front camera but the manufacturer does not disclose the CMOS sensor for the rear camera. These are identical specifications to its sibling, the Kingslim D2 and are reasonable components for this price range.

It is disappointing that Kingslim advertises the D4 as a 4K camera when this is not a true statement. 4K cameras must have a native resolution of 3840 × 2160p. The 5MP Sony IMX355 CMOS sensor only has a maximum native resolution of 2592 x 1944p.

Video Quality

The front camera records 1440p (Quad HD) video at 30fps with an average bitrate of 12 Mbps. Video quality for the front camera during the day is good and night quality is above average. Using a higher resolution will result in larger files but video quality does not improve since it is interpolated.

The rear camera records 1080p video at 30fps with an average bitrate of 10 Mbps. Unfortunately the rear camera footage is noticeably worse than the front camera particularly at night. Rear cam video quality is good during the day but below average at night.

The rear camera is waterproof and can be used externally. Depending on your vehicle, mounting this externally may not be the easiest. That being said, the rear camera can be mounted internally.


While the video quality of the Kingslim D4 is similar to the Kingslim D2, the D4 has more features than the D2. The D4 comes with a 3″ touchscreen, g-sensor and has built in GPS.

The camera also comes with WiFi and Kingslim recommends using their “Roadcam app”. As of November 2020, this app is not available on the Google Play store but must be downloaded from the Kingslim website. If you trying using one of the many Roadcam apps on the Play store, you will likely not be able to connect with the camera. Big thumbs down with the app experience.

The D4 provides non-buffered parking mode if you hardwire the dash cam to your vehicle (optional hardwire kit required). Unfortunately the D4 does not come with audio error notifications. It does provide error notifications on the screen but these can easily be missed by the driver.

The camera comes with an adhesive mount and cannot swivel to record interactions at the driver or passenger windows. The D4 is a medium sized camera at 85 x 48 x 17mm. The build quality, while ok, is not the greatest.


Kingslim  appears to be responsive to questions but beyond that, the camera has limited support. We have not seen any firmware updates for this camera since it has been launched. Kingslim provides a 12 month warranty, which is standard for most dash cams.

Note that some reviews indicate that Kingslim provides a free gift in exchange for Amazon reviews. This is not ethical and could influence the ratings there.

Known Problems

SD Card Issues

The most common issue with this camera are SD card issues. Numerous owners have indicated SD card errors when using the camera and requests to reformat the card. Ensure you are using a legitimate microSD card with this camera


Like it’s sibling the Kingslim D2, there are reports that the camera runs hot. Given the heat it generates and the usage of a lithium battery instead of a capacitor, hot environments may be problematic.

Sample Videos

Should I Purchase

The Kingslim D4 is a low priced dual dash cam with reasonable specs. It is quite similar to the Kingslim D2 but with a few extra features (GPS, WiFi). The front video, while not the best would be acceptable for many people. The rear video is not as good.

The negatives include the false 4K advertising for the camera, the Roadcam app that is not on the Google Play store, limited support and unknown reliability.

We also suspect the free gift in exchange for positive reviews has influenced the Amazon rating for this camera (not an ethical practice).


Detailed Specifications

Read Review
Camera Type Dual Channel
Form Factor Hanging - Rectangular
Country China
Processor HiSilicon Hi3556
CMOS Rear Unknown
Channels 2
Screen 3"
Touchscreen Yes
G-Sensor Yes
Wi-Fi Yes
Parking Mode Non-Buffered
Lock Files Auto or Button
Max Resolution Front 2560×1440p (Quad HD)
Front Frames Per Second 30
Max Bitrate Front (Mbps) 12
Max Resolution Rear 1920×1080p
Rear Frames Per Second 30
Max Bitrate Rear (Mbps) 10
Video Format MP4
Compression H.264 or H.265
Diagonal Viewing Angle Front 170°
Diagonal Viewing Angle Rear 150°
SD Card Type MicroSD
Max Size (Spec) 256GB
Max Size (User) 256GB
Size Front (mm) 85 x 48 x 17
Size Rear (mm) Unknown
Mount Adhesive
Power Supply 5V
Operating Temp -20°C to 60°C
Battery Battery - Unknown mAh
Error Notification Screen
Swivel (To Record Side Windows) No
Apps Android, iOS
Cloud Connectivity No
Release Date Jul 2020
Warranty 12 months
Unique Features Waterproof exterior rear camera
Advantages Low price
Disadvantages Not real 4K video
Poor quality rear camera
Battery instead of capacitor
Low rated app
Final Word Not a native 4K camera and video quality reflects that. Front video is acceptable, rear video is below average at night. Reliability is unknown at this point

Published: November 25, 2020

Kingslim D4 - DashCamTalk
Kingslim D4

The Kingslim D4 is not a native 4K camera and video quality reflects that. Front video is acceptable, rear video is below average at night.

Product SKU: Kingslim D4

Product Brand: Kingslim

Product Currency: USD

Product Price: 70

Price Valid Until: 2023-01-01

Product In-Stock: SoldOut

Editor's Rating: