The 70mai Dash Cam A510 costs $110 from 70mai’s site, jumping to $130 if you want to add in the rearview camera. Amazon sells a bundle with both cameras and a 64GB microSD card for $140.

We’ve included an option for a standalone add-on backup camera if that’s all you need, and some aftermarket navigation systems, such as those from Garmin/Nuvi, have inputs for backup cameras.