70mai 4K M800 Dash Camera review, solid budget screen-less 4K solution!

[Augustus]

I have spent the better half of the last month road-testing 70mai's latest release, the 4K M800. Read on to find out my thoughts on this little pocket 4K Starvis 2 solution.



70mai 4K M800 (Sony Starvis 2 IMX678/IMX662, Wi-Fi 4, 4K front + 1080p rear, HDR both channels)

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Firmware: v1.0.37ww. The firmware version loaded from the factory onto the device was v1.0.37ww, and during the testing period I did not receive any further firmware updates.

App for testing: Android version v3.13.1, obtained from Google Play Store.
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The verdict:

70mai has had quite the year in 2025, rolling out a number of decent Starvis 2 solutions in differing form factors. The 4K M800 is yet another, this time without a display to boot. The execution of this product shows that 70mai has given great thought to how the lack of a screen will affect the operation of a dashcam. What results is a solid dash camera in the 4K M800, for those wanting a strong 4K sensor up-front and Starvis 2 at the rear. I can whole-heartedly recommend the 4K M800 for those consumers who wish to have a dashcam with 4G surveillance support, and not necessarily wishing for all the trimmings.




My nitpickings:

• Design issues: microphone and reset holes should be separately labelled to avoid confusion
• Wi-Fi 4 transfer speeds and eMMC speeds are dated in 2025
• Now that 70mai has multiple 4K models even at the lower-end, models such as the M800 risk being diluted in the product line-up

The positive:

• Always solid and clear 4K video quality from the Starvis 2 sensor on-board; rear sensor performs decently
• Seamless integration with the UP04/UP05 4G hardwire surveillance kit for parking monitoring
• Build quality and heat dissipation is fantastic
• In-built speaker is loud and clear
• Reliable and detailed voice prompts make the lack of a display a non-issue
• App and cloud functions are a strong point of 70mai

 

[Augustus]

70mai 4K M800 Dash Camera sample footage:



Daytime Footage (front): 4K30, HDR on:

Daytime Footage (rear): 1080p, HDR on:

Night Footage (front): 4K30, HDR on:

Night Footage (rear): 1080p, HDR on:

 

[kamkar]

Seem to perform well.
I am however not crazy by the form factor as the wide housing are more visible on the windscreen, on the other hand if you have a sensor island you can mount off below it, this might be better suited than the traditional wedge shape.

 

[Augustus]

Seem to perform well.
I am however not crazy by the form factor as the wide housing are more visible on the windscreen, on the other hand if you have a sensor island you can mount off below it, this might be better suited than the traditional wedge shape.

Fair point, everyone has their own preferences for dashcam design but I must say the extra ventilation grilles are much appreciated.

 

[Augustus]

There has been some more updates to the 70mai APP in the Google Play Store:

70mai - Apps on Google Play

70mai App is a mobile phone software used with 70mai Smart Dash Cam.

play.google.com

The latest version is now 3.14.0 and brings the following improvements:

- Support for new device T400
- Support for message filtering and deletion in the Message Centre and Alert Centre
- Support for device model search when adding a device
- The minimum supported version of the app has been adjusted to Android 7.0
- Fixed some translation issues
- Fixed other known issues

 

[Augustus]

70mai 4G Standard and Premium Plans launched

Today 70mai has launched subscription plans for it's 4G Hardwire Kit-enabled surveillance-supported dashcams. More details here: https://dashcamtalk.com/forum/threads/70mai-4g-subscription-plans-launched.59274/

 

[Augustus]

There has been some more updates to the 70mai APP in the Google Play Store:

70mai - Apps on Google Play

70mai App is a mobile phone software used with 70mai Smart Dash Cam.

play.google.com

The latest version is now 3.15.0 and brings the following improvements:

- Support for new device M310 Plus 4K and N500
- Redesign and optimisation of the device pages for some models
- Fixed some translation issues
- Fixed other known issues


Pretty cool to see the redesign come too, functionally it's the same but a much cleaner layout.

 

[Augustus]

There has been a firmware update for the 70mai 4K M800, taking it from version 1.0.37.ww to 1.1.43.ww

Changelog:
- added an indicator light switch within the collision detection settings
- fixed other known issues

 

[Augustus]

There has been some more updates to the 70mai APP in the Google Play Store:

70mai - Apps on Google Play

70mai App is a mobile phone software used with 70mai Smart Dash Cam.

play.google.com

The latest version is now 4.00.0 and brings the following improvements:

- added Help Center feature
- support for new devices A800SE SpeedEye and A810 Lite
- continued redesign and optimisation of device pages
- relocated the entry for the "Me" section
- added guidance prompts when adding multiple dashcams (when the number of devices increases from one to two)
- fixed an issue where added devices did not display on the page for some phone models
- fixed some translation issues
- fixed other known issues

 

[Augustus]

There has been some more updates to the 70mai APP in the Google Play Store:

70mai - Apps on Google Play

70mai App is a mobile phone software used with 70mai Smart Dash Cam.

play.google.com

The latest version is now 4.0.1 and brings the following improvements:

- redesigned and optimised device pages for some models
- added display of the server the user is located on
- added entry for customer service contact information
- fixed other known issues