After only a few months of loyal service, one of my 4GB SDHC Class6 2 cards just let me go. Unable to retrieve data, it is not even recognized, nor by my various computers, nor my various boxes (Pentax K20D and K100DS). The worst is that after 30 days to go through the manufacturer no longer provides puisqu'Amazon returns. And in this case, the manufacturer, supposed to guarantee this product for life, is almost unreachable. Their website is in the Netherlands and in France as soon as we are left with a system of what could be called a "Kafkaesque loop" clean to discourage any attempt to do replace the defective product. At the time, I had paid 16.40 euros ... Because it's worth now, I may as well put it in the trash. I do not wish you the same problems, but for me Transcend is definitely over. It works well as it works, but after that can save! I guess my head if I had over my safari in Kenya !!!