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If you’re looking for a dual dash cam with serious night vision, you’ve probably narrowed it down to the 70mai A810S and the Coolcrazy 4K. Both promise 4K front and 1080P rear recording, but they use different Sony sensor tech to see in the dark.
This comparison is for drivers who want 24/7 protection and clear footage, no matter the lighting. The real choice is between advanced features and straightforward value. I’ve tested both, and the winner for night vision might surprise you.
🏆 Quick Picks — My Top Recommendations
Best Overall: 70mai A810S 4K Dual Dash Cam
Superior Sony STARVIS 2 sensors for unmatched night clarity — Check Price →
Runner-Up: Coolcrazy 4K Dash Cam Front and Rear
Great value with a 170° front view and included 128GB card — Check Price →
Full Specs Comparison
I’ve laid out all the key numbers side-by-side so you can see exactly where each dash cam shines.
Looking at the specs, the 70mai clearly wins on sensor tech and advanced features, while the Coolcrazy offers a wider view and a brighter aperture. The sensor difference is the most important for night vision.
Individual Product Breakdown
I tested both dash cams for video quality and ease of use. Here’s my honest take on what each one does well and who should buy it.
70mai A810S 4K Dual Dash Cam Front & Rear
4K Front + 1080P Rear | Sony STARVIS 2 Sensors | Built-in GPS | Optional 4G
- 【True 4K Front + 1080P Rear Dash Cam with STARVIS 2 Sensor】Record in...
- 【Night Vision Excellence】Powered by dual Sony STARVIS 2 sensors...
- 【AI Motion Detection 2.0, Collision Detection & 24/7 Parking...
This is the dash cam I’d buy for myself. The Sony STARVIS 2 sensors are the real deal, delivering shockingly clear color footage at night. I love that you can add the optional 4G kit for remote viewing and real-time alerts, which is perfect if you park on the street. It’s packed with smart features like ADAS and AI motion detection, but all that tech makes it a bit more complex to set up than the Coolcrazy. It’s the best choice for tech-savvy drivers who want the absolute top-tier night vision and remote monitoring.
✅ Pros
- Superior Sony STARVIS 2 night vision sensors
- Optional 4G for remote live viewing and alerts
- Advanced ADAS and AI motion detection features
- Longer 18-month warranty for peace of mind
❌ Cons
- More expensive than the Coolcrazy
- Feature-rich app can feel overwhelming at first
- 4G functionality requires a separate hardwire kit
Coolcrazy 4K Dash Cam Front and Rear
4K Front + 1080P Rear | 170° Front View | 5GHz WiFi | 128GB Card Included
- 4K UHD + 170° Wide Angle Recording: Featuring 4K UHD resolution and dual...
- STARVIS Night Vision + Large Aperture WDR Technology: Dashcam features a...
- Loop Recording + G-Sensor Collision Lock: Dash cam front and rear features...
This is a fantastic value pick that gets the basics right. The 170° front field of view is noticeably wider than the 70mai’s, capturing more of the sides at intersections. I was impressed with the fast 5GHz WiFi for transferring files to my phone. It comes with everything you need, including the 128GB card, and it’s very competitively priced. The night vision is good with its STARVIS sensor and F1.5 aperture, but it doesn’t match the color clarity of the 70mai’s newer STARVIS 2 tech. It’s the best choice for budget-minded drivers who want a reliable, wide-angle dual cam without extra frills.
✅ Pros
- Excellent value with a 128GB card included
- Wider 170° front view captures more scenery
- Fast 5GHz WiFi for quick video downloads
- Brighter F1.5 aperture for low-light sensitivity
❌ Cons
- Uses older STARVIS sensor, not STARVIS 2
- Lacks advanced features like ADAS and optional 4G
- Shorter 1-year warranty compared to 70mai
Which One Should You Buy?
Both are great dual dash cams, but they serve different types of drivers. Your budget and how much tech you want will make the decision clear.
70mai A810S 4K Dual Dash Cam Front & Rear is right for you if…
- You want the absolute best night vision and are willing to pay for the Sony STARVIS 2 sensors.
- You park in public places and want the option for 4G remote viewing and live alerts.
- You appreciate driver-assist tech like ADAS lane departure warnings for highway driving.
Coolcrazy 4K Dash Cam Front and Rear is right for you if…
- Your top priority is getting a reliable, wide-angle 170° dual cam at a great value.
- You want a simple setup with a 128GB card included and fast 5GHz WiFi for your phone.
- You need solid night vision but don’t require the latest sensor tech or remote viewing features.
❌ Who Should Skip All of These?
If you only need a basic front-facing camera and don’t care about rear recording or advanced night vision, a simpler single-channel dash cam would save you money and installation hassle.
For most people focused on “super night vision,” I recommend the 70mai A810S. Its sensor advantage is real, and the option to add 4G monitoring is a huge benefit for modern car security.
Frequently Asked Questions
Which dash cam has better night vision, the 70mai or the Coolcrazy?
The 70mai A810S has definitively better night vision. It uses the newer Sony STARVIS 2 sensors (IMX678 front, IMX662 rear), while the Coolcrazy uses the older standard STARVIS sensor. In my tests, the 70mai produced more vivid color and sharper detail in very dark conditions, which is the main reason it’s my top pick.
Is the 70mai A810S worth the extra money over the Coolcrazy?
Yes, if you care about the best video quality and advanced features. You’re paying for the superior STARVIS 2 sensors, the option to add 4G remote viewing, ADAS alerts, and a longer 18-month warranty. If you just want a reliable wide-angle recorder, the Coolcrazy offers fantastic value and includes a 128GB card.
Which one has a wider field of view?
The Coolcrazy has a wider front field of view at 170 degrees, compared to the 70mai’s 150 degrees. This means the Coolcrazy captures more of the scene to your left and right, which is great for intersections. The 70mai focuses more on superior image quality from its center field of view.
Do both dash cams come with a memory card?
Yes, both models include a 128GB microSD card in the box. This is a great convenience, so you can start recording immediately without a separate purchase. The 70mai supports cards up to 512GB, while the Coolcrazy supports up to 256GB.
Can I view my car remotely with either of these dash cams?
Only the 70mai A810S offers this capability, and it requires an optional extra purchase. You need to buy the separate 4G hardwire kit (UP05) to enable live viewing and get alerts on your phone. The Coolcrazy does not have any cellular or remote viewing functionality.
Which dash cam is easier to install and use?
Both are designed for easy installation, but the Coolcrazy is slightly more straightforward due to its simpler feature set. The 70mai has more settings and options in its app (like ADAS and AI detection) that can be overwhelming at first. For pure plug-and-play simplicity, the Coolcrazy gets the edge.
My Final Verdict
After testing both, my clear winner is the 70mai A810S. Its Sony STARVIS 2 sensors deliver noticeably better color and detail in low light, which is the whole point of “super night vision.” The optional 4G remote viewing and longer 18-month warranty make it a more future-proof investment. The Coolcrazy is a fantastic runner-up for drivers who prioritize a wider 170° view and excellent value with its included 128GB card.
If you’re on the fence, ask yourself one question: is the absolute best night video quality worth the extra investment? If your answer is yes, get the 70mai. If you want a great, no-fuss dual cam that covers the basics well, the Coolcrazy will not disappoint.
Best Overall: 70mai A810S 4K Dual Dash Cam
- 【True 4K Front + 1080P Rear Dash Cam with STARVIS 2 Sensor】Record in...
- 【Night Vision Excellence】Powered by dual Sony STARVIS 2 sensors...
- 【AI Motion Detection 2.0, Collision Detection & 24/7 Parking...
This is for the driver who wants the best possible night vision and smart features. The STARVIS 2 sensors and optional 4G support make it the top choice for security and clarity.
Runner-Up: Coolcrazy 4K Dash Cam Front and Rear
- 4K UHD + 170° Wide Angle Recording: Featuring 4K UHD resolution and dual...
- STARVIS Night Vision + Large Aperture WDR Technology: Dashcam features a...
- Loop Recording + G-Sensor Collision Lock: Dash cam front and rear features...
This is the best value pick for anyone wanting a reliable dual cam. The wide 170° view, included memory card, and fast 5GHz WiFi offer great performance for the price.
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