Rexing M2 4 Review: The 4-Channel Mirror Dash Cam That Turns Your Windshield Into a Control Center

You don't buy a four-channel dash cam because you need four cameras. You buy it because you need to see the blind spots that a single front-facing lens leaves wide open, and you want to do it without turning your head to check a tiny screen. The Rexing M2 4 is a mirror-style unit that replaces your rearview mirror with a 12-inch touch screen, giving you a live feed from front, rear, and side channels all at once. It’s not a subtle upgrade; it’s a complete rethinking of how you monitor your vehicle’s surroundings while driving.

If you’ve been searching for the Rexing M2 4 specifically, you’re likely looking for a setup that handles parking surveillance, blind-spot detection, and media streaming in one package. The Rexing M2 4 is designed for drivers who want a "cockpit" feel rather than a hidden gadget. It’s a significant step up from a basic front-only cam, and it demands a bit more patience during installation to get the most out of its four lenses.

Quick Answer: Rexing M2 4

Official Specs and What the Page Lists

Based on the official product page for the Rexing M2 4, here are the key specifications. Note that the official page highlights the "Mirror Dash Cam" form factor with a 12-inch touch screen.

Note: The official page emphasizes the "Smart BSD ADAS" capabilities. If you are concerned about specific battery drain during parking mode, verify the hardwire kit requirements on the Rexing M2 4 product page, as parking surveillance often requires a dedicated power source to prevent battery drain.

What Reviewers Say

Reviews from Amazon and YouTube say this about the Rexing M2 4.

On Amazon, one reviewer noted, "Good quality and easy install," giving the unit 5 out of 5 stars. This aligns with the reality that while the hardware is complex, the physical mounting of the mirror unit itself is straightforward for most users. Another Amazon user described it as a "very cool product," also rating it 5 stars, which suggests the novelty and utility of the large screen are strong selling points for new owners. You can see current options.

On YouTube, reviewers have focused heavily on the user experience. One creator stated, "After setting up the M2, I was impressed by how easy it was to operate, thanks to the large touchscreen." This is a critical point for a mirror cam; if the interface is clunky, the size becomes a liability. Another video noted that the unit is "Worth it if your priority is a bigger rear view and you treat radar as a helper, not gospel." This is an honest assessment of the BSD (Blind Spot Detection) feature: it’s a valuable aid, but it doesn’t replace the need for you to actually look at the mirrors. Confirm details on the current product page.

Who It’s For

The Rexing M2 4 is a niche product for a specific type of driver. It’s not for everyone, but for the right person, it changes how they drive.

• Drivers of large vehicles: If you drive an SUV, truck, or van, the blind spots are significant. The 4-channel view helps you manage those gaps without constantly checking side mirrors.
• Tech-forward drivers: You’re comfortable with a large touch screen in your line of sight. You don’t mind having a 12-inch display where your mirror used to be.
• Parking surveillance needs: You want to record while parked. The 4-channel setup allows you to see if someone approaches from the side, not just the front or rear.
• Media consumers: You use the car as a living room. The ability to stream media through the mirror display is a major perk for long commutes or road trips. See options

If you’re looking for a setup that integrates with your existing driving habits rather than replacing them, the Rexing M2 4 might be overkill. But if you want a command center, it’s a strong option.

Who Should Skip

This is not a "set it and forget it" device. It’s a "configure it and live with it" device. Confirm details on the current product page.

• Minimalists: If you hate clutter, a 12-inch screen on your windshield is a dealbreaker.
• Drivers who hate glare: A large IPS screen can reflect sunlight or streetlights at night. You need to be comfortable with that.
• Budget-conscious buyers: The Rexing M2 4 is a premium product. If you just need a front camera for insurance, a basic dash cam is far cheaper.
• Drivers who don’t want to replace their mirror: Some people are emotionally attached to their existing rearview mirror. The M2 4 replaces it. If that’s a problem, look at a standard dash cam instead.

Mid-check

If the criteria above already match how you actually use the space, stop here and check current options before you keep reading comparison noise. Confirm details on the current product page.

See brand options

How to Choose in Five Minutes

If you’re on the fence, here’s how to decide quickly:

1. Check your vehicle’s mirror size: The Rexing M2 4 is a 12-inch unit. Measure your current mirror. If your car has a very small mirror, the M2 4 might look oversized.
2. Decide on hardwiring: Do you want parking mode? If yes, you’ll need a hardwire kit. This is a non-negotiable if you want to use the 4-channel surveillance features. See options
3. Consider the BSD feature: Do you trust radar-based blind spot detection? If you’re skeptical, know that it’s a helper, not a replacement for your eyes. See options
4. Look at the price: Compare the Rexing M2 4 to other 4-channel mirror cams. If the price is significantly higher than alternatives, ask yourself if the 12-inch screen is worth the premium.

You can See current options for the Rexing M2 4 to check the latest pricing and availability.

FAQ

Is the Rexing M2 4 a 4K camera? No, the Rexing M2 4 is a 1080p (Full HD) camera. If you need 4K resolution, you might want to look at the Rexing M2 Max Pro 4K, which is a different model. The M2 4 focuses on the 4-channel mirror experience rather than ultra-high resolution.

Does it come with a hardwire kit? The Rexing M2 4 typically requires a separate hardwire kit for parking mode. Check the official product page to see if a kit is included in your specific bundle.

Can I use it as a regular rearview mirror? Yes, that’s the point. The 12-inch screen displays a live feed from the rear camera, so you can see behind you. However, it’s a digital image, not a direct optical view, so there’s a slight delay. Check the official listing before you buy.

Is the BSD (Blind Spot Detection) reliable? It’s a helpful feature, but it’s not perfect. As one YouTube reviewer noted, you should "treat radar as a helper, not gospel." Use it to augment your awareness, not to replace it. Confirm details on the current product page.

Bottom Line

The Rexing M2 4 is a bold choice. It’s not for the faint of heart, and it’s not for everyone. But if you want a high-tech, all-seeing dash cam that turns your windshield into a control center, it’s one of the best options on the market. The 12-inch screen is a game-changer for visibility, and the 4-channel setup gives you peace of mind that a single-camera system can’t match.

If you’re ready to upgrade your driving experience, the Rexing M2 4 is worth your attention. Just be prepared for a larger footprint and a more complex setup than a traditional dash cam.

Sources

1. Amazon Review — https://www.amazon.com/gp/customer-reviews/R1XNPNKZ09IRGQ
2. Amazon Review — https://www.amazon.com/gp/customer-reviews/R1L04ATHWQNDS5
3. Amazon Review — https://www.amazon.com/gp/customer-reviews/R2K1QV97OSPXL3
4. YouTube — https://www.youtube.com/watch?v=gDWzqvuQhDs
5. YouTube — https://www.youtube.com/watch?v=4c7rSn_D7ng&t=429s
6. YouTube — https://www.youtube.com/watch?v=C3FUTQe31LA&t=116s

Related Links

• Guide to Choosing a Dash Cam
• How to Hardwire Your Dash Cam