Reddit mentions of Ampulla Cruiser X Dual Dash Cam, Super HD 1296P Front & 720P Rear Dash Cam 170°& 160°Ultra Wide Angle Dashboard Camera G-Sensor WDR LDWS

I use this one https://www.amazon.com/Ampulla-Cruiser-160%C2%B0Ultra-Dashboard-G-Sensor/dp/B07BBS6MGV/ref=sr_1_3?ie=UTF8&qid=1539135959&sr=8-3&keywords=ampulla+dash+cam

Sometimes it comes with a 32GB SDCard, if not pick up a Samsung EVO SDCard as these tolerate outdoor conditions better.
I have this one:
https://www.amazon.com/Samsung-Class-Micro-Adapter-MB-MC32DA/dp/B00WR4IJBE/ref=sr_1_10?s=electronics&ie=UTF8&qid=1539138484&sr=1-10&keywords=samsung+evo+micro+sd

Files are stored in two locations on the card EVENTS and VIDEO. The EVENTS folder will contain triggered video such as excessive g-forces from a crash or if you press the lock button to save current running video segment.
The VIDEO is everything else and it loops, oldest video gets overwritten when full.

Be careful with the sensitivity settings, if you have the g-sensor set too sensitive it will overfill the EVENTS folder and will stop recording. Video in this folder is assumed to be critical and it won't overwrite them unless you format the card. This is useful in the event that a crash was so severe that you were transported to the hospital and the car was towed to an impound lot. You wouldn't want the video of the impound lot to overwrite the crash video. The sensitivity setting will depend on what type of vehicle you drive and how smooth the ride is. If it says memory is full after a few days you have it set too high. If you don't have anything important saved it is easy to reformat in the settings menu. Once the sensitivity settings are good you won't see the memory full message.

It's not the best dashcam but it is a good value. I wouldn't have considered getting one if it was more that $100. This one is almost a year old and it has so far survived an Arizona summer.

Put an updated one in my 1994 Honda Accord 2 weeks ago. Front & Rear cameras, Parked recording activated by car movement when off, Saves file from overwrite if impact detected when driving, overwrites daily file so it never fills up and stops recording, 1080 front, 720 rear cameras. Can record in 2340x1296P if no rear camera installed. Just WOW.

https://www.amazon.com/gp/product/B07BBS6MGV/ref=as_li_ss_tl?ie=UTF8&psc=1&linkCode=ll1&tag=ogg00-20&linkId=5c37ae6fc6bba1425b0c57973cc1ed2e&language=en_US

A few others have linked some good leads on Amazon!

I'm torn between this one, because it comes with dual cameras, and this one, because of the product rating and that it came up as a suggestion in this thread a few times.