SJcam SJ4000 WiFi Action Camera Review: 1080P Waterproof Sport DV & Car DVR
Capturing high-definition action sports, underwater adventures, and secure daily car commutes has never been more accessible than with the legendary SJcam SJ4000 WiFi Action Camera Sport DV. Widely praised as one of the most reliable and versatile budget action cams on the market, the SJ4000 combines a crisp 12-megapixel wide-angle lens, 1080P Full HD video recording, built-in WiFi connectivity, and a robust waterproof housing rated down to 30 meters. Whether mounted to a helmet, handlebars, or your vehicle's dashboard as a car DVR, this compact device delivers exceptional performance without breaking the bank.
Engineered around an efficient Novatek chipset and a 3.0MP Aptina0330 CMOS sensor, the SJ4000 captures sharp details across multiple recording formats including 1080P at 30fps, 720P at 60/30fps, and WVGA. The vibrant 1.5-inch TFT LCD screen allows you to frame shots and instantly replay your fascinating recorded videos. Powered by a detachable 900mAh lithium-ion battery that is easy to replace and swap out to prolong operating life, the camera also supports continuous recording while charging, making it an ideal companion for long road trips and extended outdoor excursions.
Wireless integration via built-in WiFi allows seamless connection to Android and iOS smartphones through dedicated mobile apps, letting you preview shots, change settings, and transfer media files on the fly. Complete with an extensive accessory bundle including a waterproof case, helmet mounts, bicycle handlebar brackets, and mounting clips, the SJcam SJ4000 provides a complete, out-of-the-box solution for extreme sports and everyday security alike.
170° Wide-Angle Lens & 30M Waterproof Versatility
At the optical heart of the SJ4000 is a 12-megapixel HD wide-angle lens featuring a sweeping 170-degree field of view. This expansive perspective ensures that nothing escapes the frame, whether you're capturing sprawling landscapes, chaotic traffic patterns, or fast-paced action sports. The camera supports multiple photo-shooting modes including single-shot, snapper, self-timer, and high-speed continuous burst rates, giving creators ample flexibility for capturing the exact moment.
When paired with its rugged, water-resistant housing, the SJ4000 transforms into a deep-water explorer capable of withstanding depths up to 30 meters. This makes it exceptional for snorkeling, swimming, surfing, and deep-water probing. Outside of aquatic adventures, its built-in car DVR functionality—supporting cycle recording and video recording while plugged into a car charger—makes it an affordable dual-purpose dash camera for vehicle safety.
With external memory support up to 32GB via Micro SDHC Class 6 (or higher) cards, HDMI high-definition output for direct TV playback, and full compatibility with Windows and Mac operating systems, the SJcam SJ4000 remains a benchmark of budget-friendly action recording reliability.
Frequently Asked Questions (Q&A)
Q: How do I connect the SJ4000 camera to my smartphone via WiFi?
A: Turn on the camera and press the power button to enable WiFi. Turn on WiFi on your phone, search for the SJ4000 network (default password: 00000000), and launch the official companion app downloaded from Google Play or the App Store.
Q: What is the maximum depth supported by the waterproof housing?
A: The included water-resistant casing protects the camera up to 30 meters underwater, making it perfect for swimming, snorkeling, and water sports.
Q: What size Micro SD memory card is supported?
A: The camera supports external Micro SDHC cards up to 32GB maximum capacity (Class 6 or higher recommended; card not included).
Q: Can the SJ4000 be used as a car dash cam or webcam?
A: Yes! It supports video recording while charging, loop recording modes for car DVR use, and functions as a standard web camera when connected to a PC.
Pros & Cons
Pros:
1. Built-In WiFi Connectivity: Allows instant smartphone app pairing for live preview and wireless file transfers.
2. 30M Waterproof Housing: Rugged case lets you safely film diving and water sports up to 30 meters deep.
3. Detachable 900mAh Battery: Easily swappable battery design extends recording sessions on the go.
4. Extensive Mounting Accessory Kit: Ships with helmet mounts, handlebar brackets, and straps included in the box.
5. Dual-Purpose Car DVR Mode: Supports continuous loop recording and charging operation for vehicle security.
Cons:
1. Legacy Resolution Limit: Records up to 1080P Full HD rather than modern 4K resolutions.
2. Memory Card Excluded: Micro SD card must be purchased separately before initial use.
