Hi,
Just to repeat what other members have encountered previously regarding the compatibility of 'Samsung Evo +' and 'Samsung Pro +' 128 GB micro SD cards with the Thinkware F770 cameras. I had the opportunity to buy both types of cards recently (I also needed a card for my Samsung S7 phone so had the view that if the higher spec 'Pro +' card didn't work in the dash cam, I could use it for my phone).
I first tried out the higher spec 'Pro +' 128 GB in my dash cam. As mentioned by another member previously, the cameras frequently prompted 'memory card error' despite formatting the card and resetting the dash cam. I did manage to record most parts of my journeys on this card, but the operation was intermittent whilst also frequently throwing in 'memory card errors' in between (not recording when errors were prompted). The card especially had problems when switching between parking mode to normal recording mode (ie when switching engine on / off), this is when it mostly prompted the errors.
I then tried out the lower spec 'Samsung Evo +' 128 GB card in the dash cam. This worked immediately and flawlessly without any problems or errors, even between parking and driving modes.
So, conclusion, a higher specification memory cards with faster read / write times may not necessarily be beneficial (or worst still, may not even work in this dash cam).