Really fast card for my Pentax K5 continuous shooting in RAW ... and 16-bit! Nothing to do with my old cards, I do not recognize my camera. I have still not tried immersion tests but is given for almost indestructible! Huge space for photo (700 + 16 bit DNG raws 16M pix) and also it is well suited to video. Two cards (you never know) replace any I was using before. Only regret: no small plastic housing provided but I slipped into the card slots of my Lowepro bags.