WOLFBOX G840S 12″ 4K Mirror Dash Cam Backup Camera REVIEW

If you’re anything like me, you’ve likely faced those frustrating moments on the road where blind spots feel enormous or backing up is a nerve-wracking guessing game. For years, I struggled with poor rear visibility in my vehicle, a problem that not only made simple maneuvers difficult but also felt like a significant safety risk. Addressing this issue wasn’t just about convenience; it was about peace of mind and preventing potential accidents. I knew I needed a comprehensive solution to improve my view and provide a layer of recording protection.

Anyone looking to enhance their driving safety and record their journeys might consider a vehicle recording system like a dash cam or a mirror dash cam. These devices are fantastic for documenting accidents, discouraging road rage incidents, and even capturing unexpected events. They solve problems like limited visibility, especially when reversing, and provide irrefutable evidence in case of disputes.

The ideal candidate for such a system is a driver who spends a significant amount of time on the road, whether for commuting, work, or travel. This includes owners of larger vehicles, those with poor factory rear visibility (like vans, trucks with shells, or certain SUVs), or anyone who simply wants an extra layer of security and documentation. On the other hand, someone who rarely drives, only uses their vehicle for very short, infrequent trips, or whose vehicle already has advanced built-in camera systems might not need this specific type of product. They might find a simpler, front-only dash cam sufficient, or perhaps no additional camera is necessary.

Before buying, potential users should think about:

* Vehicle Type and Size: Will the camera cables reach where they need to go? Is the mounting compatible with the vehicle’s existing mirror or windshield?
* Installation Complexity: Are you comfortable routing wires through trim panels and potentially tapping into reverse light wiring? Or would you prefer a simpler setup?
* Desired Features: Do you need front and rear recording? Parking monitoring? GPS tracking? WiFi connectivity for easy file access? Superior night vision?
* Screen Size and Functionality: Do you want a large screen that replaces your mirror, or a smaller, less intrusive dash cam? How important is touch screen control?
* Video Resolution and Storage: How clear do you need the video to be? How much recording time do you require, and what size memory card does the device support and come with?

Thinking through these points helps narrow down the options and ensures you choose a system that truly meets your needs.

Introducing the WOLFBOX G840S Solution

The WOLFBOX G840S 12″ 4K Mirror Dash Cam Backup Camera is a comprehensive solution designed to replace your existing rearview mirror with a large, high-resolution screen and dual recording capabilities. It promises enhanced visibility, particularly for backing up, and acts as a reliable dash cam system for recording your drives. When you purchase the WOLFBOX G840S, you typically get the 12″ mirror dash cam unit itself, a 4K front camera built-in, a 1080P rear camera with mounting hardware (screws and 3M tape), an 11-foot car charger, a 32GB SD card, and an external GPS antenna.

This specific mirror dash cam is ideal for drivers of cars, trucks, SUVs, vans, and minivans who are looking for a large, clear display to aid in reversing and reduce blind spots, in addition to standard dash cam functions. It’s particularly well-suited for vehicles where a standard backup camera wasn’t factory installed or has poor image quality. It might not be the best fit for someone who prefers their traditional rearview mirror undisturbed, wants a system that is completely invisible from outside, or needs a simpler, budget-only option without dual cameras or advanced features.

Here’s a quick look at the pros and cons I’ve experienced:

Pros:

* Large, clear 12″ display significantly improves rearview and backup visibility.
* High-quality 4K front and 1080P rear recording.
* Effective night vision capabilities.
* Useful parking monitoring mode (requires separate hardwire kit).
* Includes necessary accessories like SD card and GPS antenna.

Cons:

* Occasional boot-up issues reported by some users.
* Installation can be complex, especially routing the rear camera wire.
* The included GPS unit and app have occasional connectivity or accuracy issues.
* The rear camera’s reverse view zoom and fixed image orientation can be limiting.
* The screen can be prone to glare in bright sunlight.

Detailed Features and Practical Benefits

Living with the WOLFBOX G840S for an extended period has given me a real sense of how its features translate into daily benefits and where some areas could be improved.

Large 12″ Touch Screen Display: The most striking feature of the G840S is its massive 12-inch display. This isn’t just a novelty; it’s a genuine game-changer for visibility. It provides about 1.5 times the viewing area of a standard mirror. When the screen is on, showing the camera feed, you get a much wider view of what’s behind and around you than a traditional mirror can offer, drastically cutting down on blind spots. This is particularly beneficial on highways for lane changes or simply being more aware of surrounding traffic. The touch screen interface is responsive and makes navigating menus and settings fairly intuitive. Swiping between front, rear, or split-screen views is quick and easy.

Dual Camera System: 4K Front & 1080P Rear: The dual camera setup is fundamental to the WOLFBOX G840S 12″ 4K Mirror Dash Cam Backup Camera‘s functionality. The front camera records in crisp 4K UHD (2160p), capturing excellent detail in good lighting conditions. License plates and road signs are typically clear, which is crucial for gathering evidence in case of an incident. The rear camera records in 1080p, which is sufficient for capturing events behind you and is particularly valuable as a live feed when driving or reversing. Having both perspectives recorded simultaneously provides a much more complete picture of any event, enhancing your safety and documentation capabilities significantly.

Superior Night Vision and Image Quality: Driving at night can be challenging, and dash cam performance often suffers in low light. The G840S incorporates features like WDR (Wide Dynamic Range) and HDR (High Dynamic Range) technology, along with a professional-grade sensor and a 6-glass lens, to improve image quality in varying lighting. The upgraded low-reflectivity LCD helps reduce distracting glare from headlights or streetlights reflected on the screen itself. While license plate capture can still be tricky directly in headlights’ glare (a common challenge for most cameras), the overall clarity and ability to record road conditions and vehicle movements at night are commendable. The streaming media rearview feature in low light is far superior to a standard mirror, especially with tinted windows or cargo obstructing the view.

Reliable Loop Recording and G-Sensor: Like most dash cams, the mirror dash cam uses loop recording. This means when the memory card is full, the oldest unlocked files are overwritten by new recordings. This ensures continuous recording without manual management of storage space. The G-Sensor (Gravity Sensor) is designed to detect sudden impacts or collisions. When triggered, it automatically locks the current video file, preventing it from being overwritten by the loop recording function. This ensures that crucial footage from an accident is saved and protected. In practice, the G-Sensor sensitivity may need adjustment, and some users have reported needing a significant jolt to trigger it, so it’s wise not to rely solely on it and manually lock important footage if possible via the screen interface.

24-Hour Parking Monitor (Requires Hardwire Kit): The WOLFBOX dash cam offers a 24-hour parking monitoring feature. When properly set up with a hardwire kit (sold separately, which is a disadvantage as it’s necessary for this feature to work correctly and not drain your battery), the camera can continue to monitor your vehicle while parked. It can utilize time-lapse recording, capturing still images at a low frame rate, or trigger a standard recording if the G-Sensor detects an impact. This provides surveillance against hit-and-runs or vandalism when you’re away from your vehicle. It’s important to understand that the basic car charger connection typically cuts power when the ignition is off, so the hardwire kit is essential for continuous parking surveillance.

Integrated GPS Tracking: The included external GPS antenna adds valuable data to your recordings. It allows the WOLFBOX G840S to display your real-time speed and direction on the screen. This GPS data is also embedded in the video files, which can be very useful in reviewing footage to show your speed and location at the time of an event. Installation of the external antenna is required, and while some users find the cable just the right length, others have reported it being either slightly too short or having excess. Some older user reviews noted occasional issues with the GPS signal or accuracy, but the presence of this feature adds another layer of information to your driving records.

Convenient 5.8GHz WiFi Connectivity: The 5.8GHz WiFi feature is a modern addition that significantly enhances usability. By connecting your smartphone to the dash cam’s WiFi signal using the “WOLFBOX” app (available for iOS and Android), you can access features like real-time viewing of the camera feed, playback of recorded videos directly on your phone, and quick downloading or sharing of files. This eliminates the need to remove the SD card and plug it into a computer to access footage, which is a huge convenience. The 5.8GHz band generally offers faster and more stable connections than the older 2.4GHz standard found on some other devices. While apps for dash cams can sometimes be finicky, the WOLFBOX app provides a streamlined way to interact with your recordings.

Reverse Assist Function: When you put your vehicle in reverse (assuming you’ve correctly wired the rear camera to your reverse light power source), the WOLFBOX mirror camera automatically switches the screen to display the rear camera feed. This is combined with adjustable parking guidelines overlaid on the image, helping you judge distance and trajectory while backing up. This feature alone can drastically improve confidence and safety when maneuvering in tight spaces or simply backing out of a driveway. Some users have noted that the reverse view can feel a bit zoomed in, cutting off some peripheral vision, and the parking lines need careful calibration to be accurate for your specific vehicle and mounting position. Also, a few users reported that if the unit hasn’t fully booted before engaging reverse, the auto-switch might not happen, requiring a manual screen tap.

Enhanced Stability with USB-C Power Port: An upgraded USB-C power port is a small but significant improvement. Older dash cams sometimes used less robust power connections (like Mini-USB), which could be prone to issues like loose connections, restarts, or overheating. The adoption of a USB-C port provides a more stable and reliable power connection, reducing the likelihood of the device cutting out or experiencing power-related problems during operation. The included car charger uses this USB-C connection, ensuring consistent power flow while driving.

Other Features: The WOLFBOX G840S also includes features like adjustable viewing angles on the screen (allowing you to swipe up/down on the screen to adjust the vertical view of the camera feed, much like adjusting a traditional mirror), a mute function for audio recording privacy, and the ability to function as a traditional mirror when the screen is turned off, albeit a slightly darker one. The seamless integration of the 2.5D curved screen with the vehicle’s interior design is also a nice aesthetic touch.

While the core features of recording quality, screen size, and night vision perform well, some user feedback points to potential areas for refinement, such as installation challenges (rear camera cable length, mounting bracket limitations for certain vehicles), occasional software quirks (boot time, reverse mode not activating immediately), and the need for additional accessories (hardwire kit for parking mode, possibly a different mounting solution) to achieve desired functionality or a cleaner install. Despite these minor drawbacks, the overall performance and utility of the WOLFBOX G840S as a dual dash cam and visibility enhancer are impressive.

Insights from Other Owners

Having used the WOLFBOX G840S 12″ 4K Mirror Dash Cam Backup Camera for a while, I also looked online to see what others were saying. It seems many users share my positive sentiment regarding the significant improvement in rear visibility and the high quality of the daytime and nighttime video recordings. Numerous reviews highlighted how the large screen transformed their driving and parking experience, especially in vehicles with poor stock visibility. People also appreciated the included accessories like the SD card and GPS antenna. While most feedback was positive, a few owners did mention installation requiring some effort, occasional minor software glitches, or the necessity of purchasing the hardwire kit for the parking monitor to be effective. Overall, the sentiment appears strongly favorable, with the device often described as a worthwhile upgrade for enhancing safety and recording capabilities.

Final Thoughts

The initial problem of poor visibility and the need for reliable recording while driving was a significant concern for me, impacting both safety and confidence on the road. If left unaddressed, this could lead to dangerous situations and a lack of evidence in unfortunate incidents. The WOLFBOX G840S 12″ 4K Mirror Dash Cam Backup Camera stands out as a great solution for several key reasons. Its large, clear screen provides unparalleled rearview visibility, effectively minimizing blind spots. The dual 4K/1080P cameras ensure high-quality recording both front and back, offering crucial documentation. Finally, features like enhanced night vision and the parking monitor (with the necessary kit) add valuable layers of protection and peace of mind. If you’re looking to dramatically improve your vehicle’s visibility and gain a robust recording system, the WOLFBOX G840S is definitely worth considering. To learn more and check it out for yourself, click here.