The WonVon W4K is a Chinese dual channel dash camera released in Jul 2020. The WonVon name is trademarked by the Chinese company Shenzhen Huashangpai Technology. Note that the W4K is sold by BlueSkySea as well and is sometimes branded as the BlueSkySea W4K.
The W4K is based on the Novatek NT96670 processor. It uses a Galaxycore GC4653 CMOS sensor for the front camera and a Galaxycore GC2053 CMOS sensor for the rear camera. While the camera is advertised as a 4K camera, this is not actually true. 4K cameras must have a native resolution of 3840 × 2160p. Unfortunately, the Galaxycore GC4653 CMOS sensor only has a maximum native resolution of 2560 x 1440p.
Note that while this is sold as a dual camera, a cabin camera may be made available turning it into a 3-channel cam.
The front camera records 1440p (Quad HD) video at 30fps with an average bitrate of 25 Mbps. Video quality for the front camera during the day is very good and night quality is above average. There are some complaints of duplicate frames and video stuttering.
The rear camera records 1080p video at 30fps with an average bitrate of 10 Mbps. While noticeably worse than the front video, it is still good during the day but only average at night.
Videos from the front camera are recorded using H.265 format while the rear format records using the more common H.264 format. Note that files encoded in H.265 need newer, more powerful hardware to view videos than H.264. Blueskysea recommends using their viewer for the files. They can be downloaded here:
The W4K has a 3.16″ screen which is flatter than your typical dash cam screen. This results in cutting off the top and bottom part of the videoswhen viewing on the dash cam. This is not a big problem since very little video is cut off and viewing on any other device shows the full video.
The dash cam also comes with g-sensor, GPS and WiFi. The manufacturer recommends using the generic Roadcam or Kacam apps for this camera. Both these apps, while not the worst, are below average. The W4K provides non-buffered parking mode if you hardwire the dash cam to your vehicle (optional hardwire kit required).
Unfortunately the W4K 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 W4K comes with an adhesive mount and the dash cam connects to the mount with magnets allowing for easy attaching and removal. The camera cannot swivel to record interactions at the driver or passenger windows.
The W4K is a medium sized camera at 91 x 38 x 30mm. Build quality is good and since it has just recently been released, reliability is unknown.
WonVon appears to be responsive to questions and has adequate support. They also provide firmware updates which is a positive as well. WonVon provides a 12 month warranty, which is standard for most dash cams.
Once the stuttering video / duplicate frame issue was initially reported, a firmware update was released that appears to have reduced this problem. That being said, until additional owners provide feedback, it is difficult to say if this is a widespread problem.
Our member SawMaster has reviewed this camera on our forum and has included numerous sample videos (including the raw files).
Should I Purchase
The WonVon W4K is a reasonably priced dual camera with decent video quality for the front camera, waterproof rear camera and interesting magnetic mount. The biggest disappointments are the false 4K advertising, stuttering videos (which could be fixed via firmware updates) and poor WiFi app. Rear video quality also trails other dual dash cams.
Unfortunately given the negatives, not the best dual dash cam buy.
Published: November 14, 2020