BUILDING: (different in each product, normally)
I did the calculation, the speed is 2,5Mo per second. Slow, but I expected that. The actual size is 7,33Go before formatting and 7,32Go after formatting.
PLUS:
No: in the plastic box, there is a slot for SD adapter, the masi is removed, and evndu apart on AmazonDPEA MULTIMEDIA -Adaptateur micro SD card to SD card. This also explains the low price
CONCLUSION:
I took it for its ridiculously low price (relative to the storage capacity) + free shipping. But its price is of:
Slow read / write without adapter + (I already had one).