70mai T800 Meet the world's first dual-4K three-channel dash cam*LN

LateralNW

LateralNW

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Update: 19 June 2025
The wait is over—70mai 4K T800 is now LIVE on Kickstarter!
🚀


70mai T800 unbloxed view from above.webp


70mai T800 Unboxing before labels removed.webp


t800 system time reset instruction.webp



Meet the world's first dual-4K three-channel dash cam the 70mai T800!
To my knowledge* this is the first 3 channel dashcam that supports 2x 4K Sony IMX678 Sensors and an internal 1080p sensor.

Here is my unboxing and a deep dive into the T800 dashcams menus.
I have also done some simple voltage monitoring and found the unit uses about 8 Watts when run at 12.8 volts @ ~700mA
I have also done some simple voltage testing on the cigarette adaptor which drops to 4.9 volts at around 1.5 Amps.


I'll add to this as I prove what is claimed.
 
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My 70mai T800: Bitrate Jumps and Processor Load

I've been playing around with my 70mai T800 dash cam and noticed something pretty interesting about its video bitrate.
Typically, when I'm just driving around town or on regular streets, the bitrate hovers around 30 Mbps, which is what's generally reported.

However, I took it for a drive through some forested areas, and the bitrate jumped significantly up to about 60 Mbps!
This is most likely due to the increased visual complexity of the environment (all those leaves, branches, and varied lighting and speed variations).
Given the T800's setup with three cameras, including two 4K Sony IMX678 sensors, that increase in bitrate makes me wonder if the dash cam's
processor has to work a fair bit harder to handle all that extra visual detail. It's just a thought, but it seems likely.
For instance, I've got examples showing the front, rear, and cabin cameras while driving in the forest, and the front camera footage from normal roads, clearly illustrating this difference.

 
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70mai latest released app update.
Version 3.13.0
3x new cameras have been added.
A810S, T800E, M310

IMG_1885.webp
 
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To clarify the ERRORS to other users regarding the unboxing video above
:


The infrared lights are running in the 940nm wavelength, not 900Mhz (which is used for wireless transmission) as stated in the video.

Resolution of the front camera as stated on the retail packaging is 3840 by 2160 pixels not 2760 pixels as stated in the video.

Also it is full HD recording for the interior cabin camera, not HD recording (720p)

Also you don't need to go back into the system settings to change the time if you fail to do so during initial setup, when you connect the dashcam to the APP, it will automatically pull the system date and time for you.
 
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