After 4 months of use, I have several bad sectors. And once you tried to read a bad sector, the internal chipset to map blocks any map; no management sectors, and the card becomes unreadable until you sort and recover.
She still goes dead sectors; even going as Kingstom be unable to relocate. But, then make all the unreadable card ... it's not just that I came across a bad product; it is the internal firmware that proves a deliberate attempt to harm the consumer.