The 4K dash cam that films front and rear and reads plates at night
Is this the right fit?
- Best for
- daily commuters, rideshare drivers, and anyone who wants documented evidence of both the road and what happens behind the car
- Skip if
- Full 24-hour parking surveillance needs a separately purchased hardwire kit
- Check before ordering
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The 70mai 4K Dash Cam A800S records the road ahead in 4K with a front-and-rear two-camera setup, using a Sony STARVIS sensor for clearer low-light footage so license plates and signs stay legible at night. It has built-in GPS to stamp speed and location, 5GHz Wi-Fi for fast transfers to the phone app, a 3-inch IPS screen for on-device playback, and ADAS driver-assist alerts. A 24-hour parking mode keeps watch while the car is off, and loop recording plus time-lapse manage storage automatically on cards up to 256GB. Best fit: daily commuters, rideshare drivers, and anyone who wants documented evidence of both the road and what happens behind the car. A hardwire kit is needed for full parking-mode surveillance.
Pros
- 4K front plus rear recording with Sony STARVIS night clarity
- Built-in GPS, 5GHz Wi-Fi, and a 3-inch playback screen
- 24-hour parking mode and loop recording manage footage automatically
Cons
- Full 24-hour parking surveillance needs a separately purchased hardwire kit
Frequently asked questions
Does it record the rear of the car too?
Yes. It is a front-and-rear system, capturing 4K in front and a second camera covering the rear of the vehicle.
How is the night footage?
It uses a Sony STARVIS sensor tuned for low light, which keeps license plates and signs more legible in night driving than most standard dash cams.
What size memory card does it support?
It supports microSD cards up to 256GB and uses loop recording to overwrite the oldest footage automatically.
Do I need anything extra for parking mode?
Continuous 24-hour parking surveillance requires a hardwire kit, which is sold separately, so the camera can draw power while the car is off.



