SJCAM SJ4K 4K30FPS Action Camera Review

Looking for a great way to capture all your amazing underwater adventures? Look no further than the SJCAM SJ4k30FPS underwater camcorder. This powerful and easy-to-use camera can shoot video in stunning 4K quality, perfect for capturing all your diving, snorkeling, and swimming exploits. Plus, with its 30fps frame rate, you’ll be able to record smooth and fluid motion that looks great whether you’re sharing with friends or editing into an epic home movie. This detailed review discovers further specifications, features, and pros and cons of this lightweight underwater camera.

SJCAM is a renowned brand known worldwide for producing high-precision, high-quality image capture equipment. It is the leading action camera manufacturer, with over 40 competitors. It has significant growth potential, with communities worldwide that enhance each user’s experience.

SJCAM SJ4K Features

SJCAM SJ4K 4K30FPS Action Camera is more advanced than its predecessors. With new features and a higher resolution, this action cam is one of the most popular. And for a good reason, it’s an excellent device that can capture amazing footage. The following are the features you should look out for in the sensational camcorder.

  1. Built-in WiFi: The camera has a built-in WiFi range up to 10 meters that allow you to control the camera with your smartphone.
  2. 4K 30fps Video Resolution: The camera adopts 4K 30fps video resolution and 170-degree super wide-angle 6g fisheye lens, SJ4K could capture more beautiful scenes.
  3. 2.0-inch screen: The action camera has a 2.0-inch LCD HD screen that displays the camera’s settings and current shooting mode.
  4. Waterproof to 30 meters: It’s waterproof to 30 meters so that you can record your diving or swimming adventures.
  5. Multiple photo modes: This camcorder offers three photo modes: single shot, time-lapse, and burst shot.
  6. 900mAh battery: Your power backup is increased with this model from SJCAM has a 900mAh battery that can record up to 2 hours of 4K video.
  7. MicroSD card support: Supports microSD cards up to 128 GB.
  8. Lightweight and Portable: It’s lightweight and portable, so you can take it wherever you go.
  9. Affordable: This model is one of the most affordable action cameras starting from $66.99 apart from accessories.
  10. Excellent Image Quality: SJ4K offers excellent image quality, thanks to its 4K video resolution and 170-degree wide-angle lens.
  11. Anti-shaking: No camera shake with the smart motion detection; outstanding captures motion to ensure that your movie clips are precise and delicate, capturing exactly what you want without post-editing.

Other Noticeable of SJCAM SJ4K 4K30FPS Action Camera:

  1. Loop recording
  2. Slow motion photography
  3. Driving mode
  4. Image flipping
  5. Time-lapse photo
  6. Exposure adjustment
  7. White balance adjustment

Technical Specifications

  • Manufacturer: ‎SJCAM
  • Weight: ‎15.5 ounces
  • Camera: 14 MPX
  • Timelapse: 2 sec / 3 sec / 5 sec / 10 sec / 20 sec / 30 sec / 60 sec
  • Dimensions: ‎2.33 x 1.61 x 1.17 inches
  • Model number: ‎SJ4K
  • Batteries: ‎1 Lithium Polymer batteries included
  • Color: Black
  • Modes: VideoLapse, PhotoLapse, Burst mode, Car mode, Underwater mode, and TV mode.


  • Small in size
  • Powerful in function
  • Best-suited of outdoor sports.
  • Budget-friendly
  • Water and Shake-proof


  • 90-minute battery life
  • Limited underwater use (up to 30 meter depth).
  • Memory is Expandable up to 128 GB only.


SJCAM has a new-age 4K action camera for gen Z that records in 30FPS and supports WiFi control for smooth connectivity. It is perfect for those who want to capture their adventures in stunning detail without worrying about the quality of their footage, whether skydiving or exploring the waters. If you’re looking for an affordable and user-friendly camera that doesn’t sacrifice quality, it should be at the top of your list. Despite a few limitations, it’s worth every penny. You can also use a dedicated app to control your camera with a live viewfinder and easily share your footage with your friends. So if you’re looking for an action camera that can do it all, it’s a great option.

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