I have a Miofive 4K+2k dual dashcam (Miofive 4K+2K Dual Dash Cam with 5G WiFi, GPS, Built-in 128GB eMMC Sto) fitted to my NC3. It has built-in memory, so there are no issues with Micro SD cards, and I have been happy with the quality from both the front and rear cameras.
The front camera sits behind the rear view mirror so isn’t visible from the driver’s seat.
To mount the rear camera to the wind deflector, I purchased some sourcing map blank metal cards from Amazon, into which I drilled four holes and secured it with a small nut and bolt at each corner. The camera itself is then fixed to the card with 3M double-sided adhesive tape.
I hope this helps.

