[userbinator]

Unfortunately it's probably not meant for long-term storage, and thus they may be using the highest density flash available, which means relatively short retention.

[mosselman]

I haven’t looked into durability of flash before. How do I recognise the high density? What is the unit or indicator I have to look for?

[userbinator]

SLC is the best, then MLC, TLC, QLC, and now maybe PLC flash in order of decreasing endurance and retention.