I’ll never forget the drive. I was in a fully-loaded estate car, packed to the roof for a family holiday. Suitcases, coolers, and a mountain of kid’s gear completely obliterated any view out of the back window. Every lane change on the motorway was a heart-in-mouth moment, relying solely on my wing mirrors and a prayer. It felt like I was piloting a submarine, guessing what was happening in the massive blind spot directly behind me. This is a daily reality for van drivers, those with bulky cargo, or even just a car full of passengers. The traditional rear-view mirror, a century-old technology, often fails us when we need it most. This isn’t just an inconvenience; it’s a genuine safety hazard. An unseen car, a child on a bike, a low bollard while reversing—these are the risks we take. The search for a solution leads us beyond simple mirrors and into the world of smart, digital replacements that promise to restore, and even enhance, our view of the road behind.
- 4K+1080P Dual Camera Loop Recording: WOLFBOX G840S mirror dash cam front and rear is equipped with high-quality chips, capable of displaying perfect super HD 4K front images and 1080P rear images. The...
- Enhanced 5.8GHz WiFi Connectivity: Experience seamless and stable connections with our upgraded 5.8GHz WiFi system, offering speeds four times faster than 2.4GHz WiFi. Effortlessly connect to the...
What to Consider Before Buying a Mirror Dash Cam
An On-Dash Camera, especially a mirror-mounted system, is more than just a gadget; it’s a key solution for enhancing safety, providing irrefutable evidence in case of an incident, and delivering unparalleled peace of mind on the road. By replacing your standard mirror with a live video feed, it eliminates blind spots created by passengers, cargo, or vehicle design (like in a commercial van). It simultaneously records the road ahead and behind in high definition, acting as your silent, impartial witness for insurance claims or disputes. The integration of features like reverse assistance, parking monitoring, and GPS tracking transforms a passive piece of glass into an active safety co-pilot for your vehicle.
The ideal customer for this type of product is someone facing visibility challenges with their standard mirror—think van drivers, owners of campervans, or families who frequently travel with a packed car. It’s also perfect for tech-savvy drivers who want to upgrade their vehicle with modern safety features without a complicated, permanent installation. However, it might not be suitable for those who prefer an entirely unobstructed, traditional mirror view at all times or for owners of classic cars who want to maintain a period-correct interior. For those who only need forward-facing recording, a more compact, traditional dash cam like the GKU 4K Dash Cam might be a better, more discreet alternative.
Before investing, consider these crucial points in detail:
- Dimensions & Fit: A mirror dash cam straps over your existing rear-view mirror. You must ensure its dimensions are compatible. The WOLFBOX G840S 12″ 4K Mirror Dash Cam Dual Camera is quite large at 12 inches; measure your current mirror to ensure a secure fit and to confirm it won’t obstruct your sun visors. Also, consider the placement of the integrated front camera, as some vehicle mirror stalks or sensor housings can partially block its view.
- Video Resolution & Performance: The primary function is recording. 4K (2160p) on the front camera is the gold standard for capturing crisp details like license plates. The rear camera resolution is just as important, especially if you’re using it as a full-time digital mirror. Look for at least 1080p. Key performance features include Wide Dynamic Range (WDR) and High Dynamic Range (HDR) for balanced exposure in tricky lighting, and a quality image sensor (like Sony Starvis) for superior night vision.
- Field of View & Coverage: A wider field of view (FOV) captures more of the scene. The G840S boasts a 170° front and 140° rear view, which is excellent for covering multiple lanes and minimizing blind spots. Be aware that an extremely wide angle can sometimes introduce a “fisheye” distortion at the edges, but for a dash cam, wider is generally better for comprehensive coverage.
- Ease of Use & Installation: Most mirror cams are designed for DIY installation, but routing the rear camera cable can be challenging. Look for models with long cables (WOLFBOX provides a 20ft cable), clear instructions, and an intuitive touchscreen interface. Consider if you’ll need a hardwire kit for features like 24-hour parking monitoring, which typically requires tapping into your vehicle’s fuse box.
Investing in the right mirror dash cam can fundamentally change your driving experience, turning moments of uncertainty into confident, informed maneuvers. It’s about seeing more and worrying less.
While the WOLFBOX G840S 12″ 4K Mirror Dash Cam Dual Camera is an excellent choice, it’s always wise to see how it stacks up against the competition. For a broader look at all the top models, we highly recommend checking out our complete, in-depth guide:
Our Comprehensive Review of the UK’s Best Dash Cams for 2024
- 🏆【Ultra HD 4K+1080P Front and Rear Dash Cam】- The New advanced D600 4K dash cam simultaneously captures the road in detail with a front resolution of 4K and rear resolution of 1080P, and the...
- [4K+1080P Dual Recording] The REDTIGER F7N Plus dashcam records video up to Ultra HD 4K(3840*2160P)+FHD 1080P resolutions with STARVIS 2 Sensor, helps you read the key details like road signs,...
- 【2.5K Quad High Definition WiFi Dash Cam】The car dash cam records a super QHD videos & images at 2560X1440P with 30fps, which is 2 times resolution of traditional 1080P dashcam. Car camera dash...
Unboxing the WOLFBOX G840S: First Impressions and Core Features
From the moment the courier handed over the box, it was clear WOLFBOX aims for a premium experience. The packaging is robust and thoughtfully designed, reminiscent of opening a high-end smartphone. Inside, every component is nestled securely in custom-cut foam. The main unit, the WOLFBOX G840S 12″ 4K Mirror Dash Cam Dual Camera itself, has an immediate sense of quality. The 12-inch 2.5D curved screen is sleek and feels substantial, not flimsy. As one user noted, my initial thought was that the device looked quite bulky, but that concern vanished once I held it up to my car’s mirror; its form is ergonomic and designed to blend in. The box contains everything you need to get started: the main mirror unit, the 1080p rear camera, a GPS module, a generous 11ft power cable with a car charger, a 20ft rear camera cable, rubber mounting straps, and a 32GB TF card—a welcome inclusion that means you can install and start recording immediately. This all-in-one package is a significant advantage over competitors that require you to purchase a memory card separately. Exploring its build quality firsthand confirms it feels like a durable, well-engineered piece of kit.
What We Like
- Stunning 4K front camera resolution provides exceptional clarity.
- Large 12-inch touchscreen is bright, responsive, and easy to navigate.
- Vastly improved rear visibility, eliminating blind spots from passengers or cargo.
- Comprehensive kit includes a 32GB card and GPS module, offering great value.
Drawbacks
- Rear camera quality (1080p) is noticeably softer than the front, especially in low light.
- The glossy screen can suffer from reflections and glare in direct sunlight.
Performance Deep Dive: The WOLFBOX G840S on the Road
A spec sheet can only tell you so much. To truly understand a device like this, you have to live with it. We installed the WOLFBOX G840S 12″ 4K Mirror Dash Cam Dual Camera in a mid-sized SUV and drove with it for several weeks, covering everything from bright summer days and twisting country lanes to rainy nights and dense city traffic. Here’s how it performed.
Installation and Setup: A Straightforward DIY Project
Getting the WOLFBOX G840S up and running was surprisingly simple. The main unit attaches to the existing rear-view mirror using four durable rubber straps, which held it remarkably securely with no vibration. As one user pointed out, you do need to be mindful of the front camera’s fixed position on the left side of the unit. We had to slide the whole mirror slightly to the right on our test vehicle to get a centered forward view, but it wasn’t a significant issue. Running the power cable up to the headliner and down the A-pillar to the 12V socket was standard procedure for any dash cam. The most involved part, as expected, was routing the 20ft cable for the rear camera. We chose an interior mount at the top of the rear window, which was easier than an external license plate mount. The cable was more than long enough for our SUV, though users with larger vehicles like campervans have noted that an extension cable may be necessary. Once powered on, the on-screen menus are intuitive and controlled by touch. One small tip we picked up from another user: remember that the settings menu scrolls! We almost missed some options until we realised we could swipe up for more. The whole process, from unboxing to fully operational, took about 45 minutes without rushing. The included GPS module simply plugs into the main unit and adheres to the dashboard, providing accurate speed and location data stamped onto the recordings.
Video Quality and Field of View: A Tale of Two Cameras
This is where the WOLFBOX G840S 12″ 4K Mirror Dash Cam Dual Camera truly shines, but also reveals its primary compromise. The front-facing 4K camera is absolutely superb. The 2160p resolution, combined with the WDR technology, captures an incredible amount of detail. On a bright day, license plates are legible from several car lengths away, and road signs are tack-sharp. The footage is smooth and vibrant, providing exactly the kind of evidence you would need in an incident. The 170° field of view is expansive, covering the entire front of the car and well into adjacent lanes without excessive distortion. We were thoroughly impressed, and our findings echo many user reports praising the “fantastic” front camera quality.
The rear camera, however, is a different story. At 1080p, it’s perfectly adequate for its main purpose as a digital rear-view mirror. The live feed is fluid, with no discernible lag, and it provides a wide, unobstructed 140° view that completely eliminates traditional blind spots. For reversing and general driving awareness, it’s a game-changer. However, when reviewing the recorded footage, the difference in resolution is apparent. Details are softer, and reading license plates behind you is only possible when the other vehicle is quite close. Night performance is where this difference is most pronounced. While the WOLFBOX “Super Night Vision” does a commendable job of brightening the scene—often making the view on screen brighter than what you can see in a conventional mirror—the rear feed is prone to noise and can be blown out by the headlights of following cars. Some users reported a distracting flicker when lights appeared in very dark scenes. So, while the rear camera is a phenomenal driving aid, its evidentiary quality doesn’t match the stellar performance of the front camera. Despite this, the clarity it offers as a live mirror is a feature that really sets it apart.
The 12-Inch Display and User Experience
The 12-inch touchscreen is the centerpiece of the user experience, and it’s excellent. It’s bright, clear, and highly responsive to touch. You can swipe left and right to switch between front view, rear view, or a split-screen combination. Swiping up and down on the right side of the screen adjusts the vertical angle of the rear camera feed, a brilliant feature that allows you to aim the view higher to see distant traffic or lower to see your bumper for precise parking. This was highlighted by a campervan owner who found it perfect for their needs. The display is large enough to provide a panoramic view, but it does have one notable drawback: glare. On very sunny days, the glossy surface acts like a conventional mirror, and reflections can sometimes make it difficult to see the camera feed clearly. We found ourselves adjusting the brightness to maximum to compensate. Some users have opted to purchase third-party anti-glare screen protectors to mitigate this, which seems like a worthwhile investment.
The core smart features all performed as expected. The G-Sensor accurately detected a simulated sharp braking event, automatically locking the current video file to prevent it from being overwritten. The loop recording works seamlessly in the background. We also tested the 5.8GHz Wi-Fi connection with the WOLFBOX app. The higher frequency Wi-Fi is noticeably faster than older 2.4GHz models, making it much quicker to download video clips directly to a smartphone for viewing or sharing. The Reverse Assist function, which requires tapping into your reverse light wire, overlays guidelines on the rear feed when you select reverse gear, adding another layer of confidence when maneuvering in tight spots. The expansive screen and smart features make it a powerful upgrade for any vehicle.
What Other Users Are Saying
Our experience with the WOLFBOX G840S 12″ 4K Mirror Dash Cam Dual Camera aligns closely with the general consensus from other drivers. The praise is consistent and focuses on several key areas. Many, like one user with a motorhome, bought it primarily as an electronic rear-view mirror and were delighted to find it was also a high-quality dash cam. This dual functionality is its biggest selling point. Another user highlighted the “fantastic panoramic view” that is “especially helpful when I have passengers in the backseat blocking my rearview mirror.” The quality of the packaging and the initial impression of a premium product are also frequently mentioned.
However, the criticisms are just as consistent. The most common complaint, which we share, is the disparity in quality between the front and rear cameras. “The front camera quality is fantastic!! The rear camera quality is lacking a little,” summarises the sentiment perfectly. The screen’s reflectivity is another recurring theme, with one driver noting, “the mirror screen has reflection so it gets a bit difficult at times.” A few users also encountered technical glitches, such as the unit randomly rebooting, or minor frustrations like the fixed position of the front camera being partially blocked by their car’s mirror housing. Despite these issues, the overall sentiment is overwhelmingly positive, with many stating they have completely stopped using their traditional mirror in favour of the WOLFBOX’s superior view.
How Does the WOLFBOX G840S Compare to the Alternatives?
The WOLFBOX G840S 12″ 4K Mirror Dash Cam Dual Camera occupies a unique space, but several other dash cams offer compelling features that might better suit your specific needs.
1. GEMEK 4 Channel 2K Dash Cam 360° View
- ✔【360° All Sides Dash Cam 4 Channel】The GEMEK 4 Channel dash cam has 4 lenses, all capable of recording FHD 2K video simultaneously. It can capture the front, rear, left, and right sides of the...
- ✔【2K Dash Cam 4 Channel with HD Display】High performance Novatek chipset and Sensor, help deliver smooth 1920*1080P video. 4 Channel Videos are simultaneous display on the 3.0 inch IPS screen...
If total, all-around coverage is your absolute priority, the GEMEK 4-channel system is a formidable alternative. Instead of just front and rear, it adds two side cameras to provide a true 360° view of your vehicle, which is exceptional for navigating tight city streets or for ride-share drivers who want cabin monitoring. However, this comes at the cost of video resolution, topping out at 2K for the front camera, a step down from the WOLFBOX’s crisp 4K. The GEMEK is a more complex installation with four separate cameras to position and wire. It’s the ultimate choice for the security-conscious driver who needs to see everything, everywhere, but those who prioritize forward-facing image fidelity will prefer the WOLFBOX.
2. ORSKEY 4K Dual Dash Cam with WiFi
- 【4K+1080P Dash Cams with 170°/150°Wide-Angle】This dash cam is equipped with a 4K Ultra HD front camera and a 1080P rear camera, featuring advanced sensors and an F1.8 large aperture. The...
- 【Upgrade 5GHz Wi-Fi & Smart App Control】Connect via 5GHz Wi-Fi to our smartphone app to effortlessly set up, providing real-time preview and data transfer functions, view playback, and directly...
The ORSKEY 4K is a more traditional, compact dash cam that competes directly with the WOLFBOX on core specifications. It also offers a 4K front and 1080p rear camera, 5GHz Wi-Fi, and a large 64GB SD card included. Its main advantage is its discreet form factor; it mounts behind your existing mirror rather than replacing its function. This is ideal for drivers who dislike the large screen of a mirror cam or want to maintain their car’s original interior aesthetic. You lose the massive benefit of an always-on, obstruction-free digital rear-view mirror, which is the WOLFBOX’s killer feature. The ORSKEY is for those who want a top-tier “set it and forget it” recording device, while the WOLFBOX is for those who want an active, interactive driving aid.
3. GKU 4K Dash Cam with WiFi
- 🏆【Ultra HD 4K Dash Cam Front】The D200 dash cam captures your journey with stunning 4K (3840x2160) resolution using its front camera. Equipped with a 6-glass lens, F1.8 aperture, and a wide...
- 📱【Built-in WiFi & App Control】The dash cam front with integrated WiFi, you can connect the car camera to your smartphone using the exclusive GKU GO app, available for both iOS and Android....
The GKU 4K dash cam is an excellent choice for the budget-conscious buyer who only needs a forward-facing camera. It delivers stellar 4K UHD resolution, built-in Wi-Fi, and all the essential features like a G-sensor and parking monitor in a very compact package. Like the ORSKEY, it includes a generous 64GB SD card. The GKU is a straightforward, high-quality solution for capturing what happens in front of your car. If you have no issues with rear visibility and don’t require a rear camera or the digital mirror functionality, the GKU offers the most critical feature of the WOLFBOX—its 4K front camera—at a significantly lower price point, making it a fantastic value proposition.
Our Final Verdict: Is the WOLFBOX G840S Worth It?
After extensive testing, we can confidently say that the WOLFBOX G840S 12″ 4K Mirror Dash Cam Dual Camera is a transformative piece of automotive technology that is absolutely worth it for the right driver. Its ability to provide a clear, wide, and unobstructed view of the road behind you is nothing short of a revelation, especially for those in vans, SUVs, or frequently packed cars. The 4K front camera is exceptional, capturing forensic-level detail, and the large, responsive touchscreen makes it a pleasure to use. While the 1080p rear camera’s recording quality could be better and the screen is prone to glare, these are acceptable trade-offs for the immense safety and convenience benefits it provides as a live digital mirror.
If your primary problem is a blocked or limited rear view, the WOLFBOX G840S isn’t just a good choice; it’s the solution you’ve been looking for. It offers a premium experience from unboxing to daily use and packages it with everything you need to get started. For a comprehensive safety upgrade that serves as both an elite dash cam and a superior rear-view system, the WOLFBOX G840S is an outstanding investment we wholeheartedly recommend.
Last update on 2025-11-13 / Affiliate links / Images from Amazon Product Advertising API