QUMOX SJ4000 action camera test, photo and video

Photo quality
Video quality
Price quality
Overall rating 4.1 / 5

We looked again for a cheap action camera and came across the QUMOX SJ4000 Cam.

You can use them in a variety of leisure activities such as rock climbing, skiing, diving or sledding.

Of course, the model is not comparable to a GoPro camera, but the price / quality ratio of the QUMOX SJ4000 is very good and well suited for beginners.

Getting started is pretty easy. All you need to do is charge, install or configure the camera and start recording.

In addition, there are many different recording functions and modes, including loop recording or Wi-Fi connection with a smartphone, for example.

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Technical data, scope of delivery and scope

The package includes an incredible amount of accessories. You must place them at the beginning so that you can connect the elements correctly later.

The camera itself is very lightweight and relatively lightweight. The processing also looks very simple, but still high quality.

There is also an underwater housing which ensures you can use the camera underwater.

When the camera is in the body, the sound recordings are slightly worse and not as high quality. Otherwise, the audio, photo and video are very clear, and fast movements are well recorded thanks to the high frame rate.

However, the photocell has problems in dark rooms with a small light source; here it looks like the camera has generated pixel errors. Therefore, we recommend using the QUMOX SJ4000 Action Camera only in good lighting conditions.

Unfortunately, the instruction manual is a little confusing, but the menu structure seems very appropriate for that.

In our opinion, the price / quality ratio is absolutely normal. We can recommend the camera to every beginner.

You can use them in many different ways.

Camera quality

Installed a 12MP photo sensor and a 170 degree wide angle lens with a 6G lens.

In the menu, you have a wide range of setting options and, among other things, you can choose between different resolution formats.

Photos can be taken in the following resolutions: 12 MP, 8 MP and 5 MP. You can choose one of the following video formats: 1280 x 720 pixels at 60 frames per second, 848 x 480 pixels at 60 frames per second, QVGA, which is 640 x 480 pixels at 60 frames per second. The video format is H.264.

You can also set different recording modes. For example, single shot, self-timer (2s, 5s, 10s) or continuous recording.

Battery performance and runtime

A 900mAh battery is included in the package. With it, you can record 1080P videos for 70 minutes at a time.

Battery charging time is about 3.5 hours.


Visually, the camera is not much different from other models. On the front is a photo lens and a power button, on the left there are various connectors for USB and HDMI, as well as a slot for a memory card.

The display is at the back and the confirmation button is above.

You can take your camera with you wherever you go thanks to its compact size. It has the following dimensions: 59.27 cm x 41.13 cm x 29.28 cm. The screen is a liquid crystal display (LCD) with 1.5LTPS.

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Pros and cons


  • Very good value for money
  • 170 degree wide angle lens for better light and optimal field of view
  • Various resolution formats possible
  • Extensive scope of supply
  • USB and HDMI interface
  • Battery lasts over 70 minutes with continuous recording at 1080P and 60fps
  • Can be used for different operating systems (Windows XP, VistaorAbove, Win7, Mac OS, etc.)
  • Compact dimensions
  • Waterproof case included


  • Poor shots in low light
  • Operating instructions are confusing


You can use QUMOX SJ4000 for different purposes. For example, as a video recorder, video camera or for diving.

We especially liked the optimal price / performance ratio and the extensive scope of supply.

You can buy this model here on Amazon! *