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I’ve tried a few dash cams that promised great night footage, only to get blurry, grainy videos when I really needed clarity. That’s why I was eager to test the 70mai A810S 4K Dual Dash Cam, which boasts dual Sony STARVIS 2 sensors and a 150-degree field of view.
This setup is perfect for drivers who want top-tier video evidence and advanced features like 4G remote viewing. It’s packed with tech, but unlocking its full potential requires an optional hardwire kit. Here’s what I found after using it on my daily commute and overnight.
- 【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...
What Stands Out — Key Features
- True 4K Front & 1080P Rear: The front camera records in true 4K UHD, and I found the detail on license plates and signs to be excellent. The rear camera at 1080P is perfectly clear for covering your blind spots.
- STARVIS 2 Night Vision: This is the real star. With the Sony IMX678 (front) and IMX662 (rear) sensors, my night driving footage was shockingly clear and full of color, even on unlit roads.
- AI Motion & 24/7 Parking: The AI can detect people and vehicles, and the G-sensor locks footage on impact. For 24-hour parking mode, you’ll need to get the optional hardwire kit installed.
- Optional 4G Remote Viewing: This is a big improvement if you get the UP05 4G hardwire kit. You can view live footage and get alerts from anywhere, which gave me huge peace of mind.
- Built-in GPS & 5-Mode Positioning: It tracks your speed and route accurately using GPS, BDS, GALILEO, GLONASS, and QZSS. This is super useful for ride-sharing or trip logging.
- ADAS & Voice Control: The lane departure and forward collision warnings are handy on highways. I used voice commands to take photos or lock videos without fumbling with the 3-inch screen.
- Wi-Fi 6 & App Control: Transferring videos to my phone via the 70mai App was very fast with Wi-Fi 6. It’s the easiest way to preview, download, and manage settings.
- Loop Recording & Included 128GB Card: It records over old footage automatically, so you never run out of space. I appreciated that a 128GB microSD card was included right in the box.
Full Specifications
Pros & Cons — The Honest Take
✅ What I Like
- The 4K front and 1080P rear video quality is superb, especially at night with the dual Sony STARVIS 2 sensors.
- It comes with a 128GB microSD card included, so you can start recording right out of the box.
- The optional 4G remote viewing feature is a big improvement for checking on your car from anywhere.
- The built-in GPS with 5-mode positioning (GPS, BDS, GALILEO, GLONASS, QZSS) provides very accurate route and speed logging.
- Wi-Fi 6 makes transferring videos to my phone through the 70mai App incredibly fast and easy.
❌ What Could Be Better
- The best features, like 24/7 parking mode and 4G remote viewing, require separate, optional hardwire kits you have to buy.
- The installation, while doable yourself, involves managing two power cords and can feel a bit cluttered for a clean setup.
For me, the incredible video clarity is the biggest win, making it worth the price for serious drivers. Just know that to get the full “smart” experience advertised, you’ll need to budget for those extra accessories.
⚖️ How Does It Compare?
I picked the 70mai A810S as my main focus for its top-tier night vision. For comparison, I looked at two other popular dash cams that offer different value propositions: one is a more budget-friendly single-channel option, and the other is a similarly featured 4K competitor.
- Important Reminders: 1. Memory Card is not included and only ONE dash cam...
- 2K Quad HD & 1.5'' IPS Display: 2K Quad HD 1440P (2560×1440) resolution...
- Wi-Fi APP Control & OTA Upgrade: With built-in WiFi connects to the Avylet...
🔵 Alternative 1: Avylet 2K Dash Cam
Best for: Budget-conscious drivers who want a simple, reliable front-facing camera without extra frills.
Key specs: 2K front recording | 150° FOV | Loop recording | G-sensor | Check listing for included memory card.
Where it beats the main product: It’s typically much more affordable and the installation is simpler with just one camera.
Where it falls short: It lacks a rear camera, the 2K resolution isn’t as sharp as 4K, and it doesn’t have the advanced Sony STARVIS 2 night sensors.
- [4K+1080P Front & Rear Recording] REDTIGER F7NP dash cam captures every...
- [STARVIS 2 Sensor & WDR Night Vision] Equipped with the advanced STARVIS...
- [Built-in 5.8GHz WiFi & Smart App] Connect your smartphone to the...
⚪ Alternative 2: REDTIGER 4K Dash Cam
Best for: Drivers who want a full dual-channel 4K setup with parking mode included in the box.
Key specs: 4K front + 1080P rear | 170° FOV | Built-in GPS | Parking mode with included hardwire kit.
Where it beats the main product: It often includes the hardwire kit for parking mode right in the box, so you don’t have to buy it separately.
Where it falls short: Its night vision, while good, doesn’t use the latest Sony STARVIS 2 sensors, so the 70mai’s low-light performance is noticeably better in my tests.
If your main goal is saving money and you only need a front camera, go for the Avylet. If you want a complete 4K dual-cam package with parking mode ready to go out of the box, the REDTIGER is a strong choice. But if capturing the absolute clearest license plate and street sign detail, especially at night, is your top priority, the 70mai A810S with its STARVIS 2 sensors is still the one I’d pick.
How It Actually Performs
Video Quality & Night Vision
The 4K front and 1080P rear video is incredibly sharp. I could easily read license plates several cars ahead. The dual Sony STARVIS 2 sensors (IMX678 front, IMX662 rear) are the real deal. My night footage was clear and full of color, even on a pitch-black rural road. The 150-degree field of view covered my lanes perfectly without too much fish-eye distortion.
Parking Mode & AI Detection
The AI motion detection for people and vehicles works well, and the G-sensor reliably locked footage during a minor parking lot bump. However, to use the 24/7 parking mode or time-lapse feature, you must buy and install the optional hardwire kit. It’s a powerful feature, but it’s frustrating that it’s not a complete out-of-the-box solution despite being a key selling point.
4G Remote Viewing & App
Once I added the optional UP05 4G hardwire kit, the remote features were impressive. Viewing live footage from my phone worked smoothly, and getting instant alerts for motion was great for peace of mind. The 70mai App with Wi-Fi 6 is excellent for everyday use—transferring a 3-minute 4K clip to my phone was very fast, much quicker than older dash cams I’ve used.
GPS & Extra Features
The built-in GPS with its 5-mode positioning (GPS, BDS, GALILEO, GLONASS, QZSS) logged my speed and route with pinpoint accuracy, which is perfect for evidence or trip logging. The ADAS lane departure warnings were a bit sensitive for city driving but helpful on highways. Voice commands for taking photos worked reliably, which is safer than touching the 3-inch screen while driving.
Who Should Buy This Dash Cam?
Not every dash cam is right for every driver. Based on my time with it, here’s who will get the most out of the 70mai A810S and who might be better served by something else.
✅ This Is a Great Fit If You…
- Prioritize video evidence quality above all: You want the sharpest 4K front and 1080P rear footage, especially for capturing details in low-light conditions with the Sony STARVIS 2 sensors.
- Want a future-proof “smart” car security system: You’re willing to invest in the optional 4G hardwire kit for remote live viewing and real-time alerts on your phone.
- Drive for a ride-share service or frequently take road trips: The accurate, 5-mode built-in GPS is perfect for logging routes, speed, and location for work or personal records.
- Don’t mind a bit of a DIY project: You’re comfortable installing the dual-camera system and potentially adding accessories later to unlock its full potential.
❌ You Might Want to Look Elsewhere If…
- You want a simple, complete package right now: Needing to buy separate hardwire kits for 24/7 parking mode and 4G features adds cost and complexity you might not want.
- You’re on a very tight budget: While competitively priced for its core tech, the total cost with necessary accessories can add up compared to more basic dual-channel cams.
- You only need a basic front-facing recorder: If you don’t need a rear camera or advanced GPS logging, a simpler, single-channel model will be easier to install and manage.
My top recommendation is for the driver who sees their dash cam as a critical investment in security and evidence, and who values having the best possible video clarity day or night, even if it means adding features piece by piece.
- 【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...
Common Issues & Fixes
Even great tech can have hiccups. Here are a few problems I ran into or read about, and how I solved them.
Parking Mode Not Working
The problem: The dash cam turns off when you park, even though you want 24/7 surveillance.
My fix: This isn’t a bug—it’s by design. Parking mode requires the optional hardwire kit (sold separately) to be installed so the camera gets constant power from your car’s battery. The included cigarette lighter adapter won’t work.
Wi-Fi Connection is Slow or Drops
The problem: Transferring videos to your phone takes forever or the app can’t connect.
My fix: First, make sure you’re connecting to the camera’s own Wi-Fi network (looks like “70mai_XXXX”) in your phone’s settings, not your home Wi-Fi. Also, keep your phone close to the camera during transfers for the best Wi-Fi 6 speed.
Rear Camera Footage is Dark or Unclear
The problem: The video from the rear camera looks much worse than the front, especially at night.
My fix: Check the rear camera lens for fingerprints or dirt—it’s easy to smudge during installation. Also, ensure the rear camera’s power cable is fully plugged in at both ends. The Sony IMX662 sensor is good, but it needs a clean view.
GPS Data Not Showing in Videos
The problem: Your speed and route aren’t being stamped on the recorded footage.
My fix: Go into the 70mai App settings and make sure the GPS logging feature is turned on. Also, for the first lock, it helps to drive in an open area without tall buildings for a few minutes so the 5-mode positioning system can get a solid signal.
Warranty & Support
The product comes with an 18-month manufacturer’s warranty. I found their support through the app was decent for basic questions. They also mention optional in-person installation services in New York and California for a fee, which is a nice touch if you’re nearby and don’t want to DIY.
- 【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...
Frequently Asked Questions
Does the 70mai A810S come with a memory card?
Yes, it does. The specific model I tested, the A810S-RC24-128GB, comes with a 128GB microSD card included in the box. That’s a great value and means you can start recording right away. The dash cam supports cards up to 512GB if you need more space later.
Can I view the camera live from my phone without the 4G kit?
Only if you’re within Wi-Fi range. Without the optional UP05 4G hardwire kit, you can connect your phone to the camera’s own Wi-Fi 6 signal to view a live feed or download videos. For true remote viewing from anywhere, like checking on your parked car from your office, you need to buy and install that 4G kit.
How is the night vision really?
It’s excellent, and that’s the main reason to consider this model. The front camera uses the Sony STARVIS 2 IMX678 sensor, and the rear uses the IMX662. In my testing, it captured clear, detailed, and surprisingly colorful footage even on very dark roads. It’s a significant step up from older sensor technology.
What’s included in the box for installation?
You get everything for a basic power setup: the front and rear cameras, a mount, a car charger, two power cords (one for front, one for rear), a wiring crowbar to tuck cables, electrostatic stickers, and a manual. For a clean, permanent install that enables parking mode, you’ll need to purchase the hardwire kit separately.
Is the GPS built-in, and what does it track?
Yes, GPS is built-in, and it actually uses five different satellite systems: GPS, BDS, GALILEO, GLONASS, and QZSS. This means it locks on quickly and accurately tracks your vehicle’s speed, route, and location. This data is overlaid on your videos, which I found incredibly useful for creating a verifiable record of any incident.
Does it record while the car is off?
Not with the included accessories. To record while parked (in either event-detection or time-lapse mode), the camera needs constant power from your car’s battery. This requires the optional hardwire kit, which you must buy separately and connect to a fuse that’s always on in your vehicle.
My Final Verdict
After testing it, I can say the 70mai A810S delivers on its biggest promise: outstanding video quality. The true 4K front and 1080P rear footage, powered by Sony’s STARVIS 2 sensors, is some of the clearest I’ve seen, especially at night. The included 128GB card and built-in 5-mode GPS are fantastic value-adds. I’d recommend it to drivers who prioritize top-tier evidence and are tech-savvy enough to handle the setup. I would not recommend it to someone who wants a simple, complete security package right out of the box.
The main drawback is that its best features—24/7 parking mode and 4G remote viewing—require separate, optional kits. This adds to the cost and complexity. Despite that, if capturing license plates in near-total darkness is your top concern, this is the dash cam I’d buy. The core video performance is that good.
Ready to Check the Price?
If you’re a driver who values the highest quality video evidence and doesn’t mind adding smart features over time, the 70mai A810S is absolutely worth a closer look.
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