Returned SJCam SJ4000 is a compact action camera designed for wide-angle outdoor and underwater recording. It features a 12 MP sensor, a 170° A+ HD wide-angle lens and Full HD 1080p video recording. A 2.0" LCD (stated 1.5"/2.0" in specs) provides framing and playback, and the camera is supplied with a waterproof housing rated to 30 m for diving and water sports. The camera supports multiple photo and video modes, removable battery operation and compatibility with common mounts and accessories, making it suitable for cycling, skiing, driving and general adventure use.
Advantages
The SJCam SJ4000 combines a high-angle 170° lens with a 12 MP still capability and H.264 Full HD video capture to deliver broad, detailed footage. The included waterproof case enables underwater use to 30 meters, while the removable 900 mAh battery and microSD storage (up to 32 GB) allow extended recording sessions. Built-in modes such as time-lapse, self-timer and configurable video resolutions plus HDMI/AV output and webcam functionality increase its versatility for action, automotive and everyday recording tasks.
Suitable for
- Cycling and mountain biking
- Snorkeling and recreational diving (within waterproof case depth limit)
- Skiing, snowboarding and other winter sports
- Dashcam use and vehicle recording
- Helmet-mounted POV recording for action sports
Key specifications
- Image sensor: 12 MP still photos
- Lens: 170° A+ HD wide-angle, 6G optical elements
- Video resolutions: 1080p 30 fps, 720p 60 fps (double-frame mode), VGA/QVGA 60 fps
- Video codec: H.264 (MOV)
- Display: Built-in LCD for framing and playback
- Battery: Removable 900 mAh rechargeable battery; charging time ~3.5 hours
- Recording time: Around 70 minutes at 1080p on a full battery
- Storage: microSD up to 32 GB (Class 4 or above recommended)
- Interfaces: USB 2.0, HDMI output, AV output (with specific cable)
- Waterproof capability: With supplied housing rated to 30 m
- Operating systems supported for file transfer: Windows XP/Vista/7 and Mac OS
- Physical dimensions: approx. 59.3 x 41.1 x 29.3 mm
How to use
Insert a compatible microSD card (up to 32 GB, Class 4+) and charge the removable 900 mAh battery fully before first use. Mount the camera to the chosen accessory (helmet, bike, bracket) using the supplied mounts and adapters; ensure the waterproof housing is correctly sealed before any underwater use. Power the camera on, select the desired shooting mode (video resolution, photo mode or time-lapse) using the on-screen menu, frame the shot on the LCD and start recording. For vehicle use, install in a stable position and use car mode if available. After recording, connect the camera to a computer via USB or remove the microSD card for file transfer. Replace the battery as needed to extend usage time.
Usage recommendations
Use microSD cards of Class 4 or higher for reliable recording; format new cards in the camera before use. Rinse the waterproof case with fresh water after saltwater use and check seals for debris before submersion. Keep spare charged batteries on hand for longer sessions and avoid exposing the camera or housing to strong impacts or direct heat.
