SJCAM SJ4000 Air 4K Waterproof WiFi Action Camera

Capture Every Action in 4K, On Land or Underwater

The SJCAM SJ4000 Air Action Camera is designed for clear, stable recording across outdoor, travel, sports, and daily use scenarios. It records at up to 4K/30fps, delivering sharp video with visible detail for cycling, motorcycling, snorkeling, diving, and more. A 2.0" LTPS display lets you frame shots accurately and review footage on the spot, so you can adjust angles and settings without guesswork. With its included waterproof housing, the camera is rated for use down to 30 meters, enabling underwater shooting in pools, lakes, and coastal environments while protecting the device from rain, splashes, and sand.

The 170° wide-angle lens provides an extended field of view, helping you capture more of the scene in tight spaces or fast-moving situations. Multiple video resolutions are available, including 4K (3200×1800) 30fps, 2.7K (2688×1520) 30fps, 1080p 60/30fps, and 720p 120/60/30fps, allowing you to balance detail, frame rate, and storage needs. Still images can be captured at up to 16MP, with additional options at 12MP, 8MP, 5MP, and 2MP. The camera supports time-lapse shooting to condense long scenes into short clips, and a 4x digital zoom helps you compose shots without changing your position. Car mode enables use as a driving recorder, while webcam mode supports online learning, meetings, and live communication when connected to a computer.

Integrated 2.4G WiFi allows you to connect the SJ4000 Air to the companion app for remote control, live view, and wireless transfer of photos and videos to your smartphone. This connection does not use your mobile SIM data for camera-to-phone communication. From the app, you can trigger recording, adjust settings, and share content to social and messaging platforms. The camera uses H.264 compression and records in MOV format, and supports microSD cards up to 128GB (card not included). A range of mounting accessories is included so you can attach the camera to helmets, handlebars, tripods, and other surfaces for cycling, motorcycling, and action sports setups. The device connects via USB 2.0 and is compatible with Windows XP or later and macOS 10.4.11 or later.

Why It's a Smart Choice

• Versatile recording options with 4K/30fps video, multiple resolutions, and up to 16MP photos for different shooting needs.
• 30 m waterproof housing, 170° wide-angle lens, and time-lapse mode to cover a wide range of outdoor, underwater, and creative scenarios.
• 2.4G WiFi app control, webcam functionality, car mode, and included mounts for flexible use in sports, commuting, content creation, and remote work.

FAQ

Q: Can I use the SJ4000 Air as a helmet or handlebar camera for biking and motorcycling?
A: Yes. The included mounting accessories allow you to attach the camera to helmets, handlebars, and other surfaces commonly used in cycling and motorcycling setups.

Q: How deep can I take the camera underwater?
A: With the supplied waterproof housing correctly sealed, the camera is suitable for use down to 30 meters, making it appropriate for swimming, snorkeling, and many recreational diving situations.

Q: What type of memory card does this camera support?
A: The SJ4000 Air supports microSD cards up to 128GB capacity. For best performance, use a high-speed card from a reputable brand.

Q: Can I control the camera from my phone?
A: Yes. You can connect the camera to the dedicated app via 2.4G WiFi, then start and stop recording, change settings, view a live preview, and transfer files wirelessly.

Q: Is it possible to use this camera as a webcam?
A: Yes. When connected to a compatible computer via USB, the SJ4000 Air can function as a webcam for online classes, meetings, and streaming, depending on the software and operating system used.