Despite the lack of detail on the map in the description ("standard") on Amazon, you should know that the 32GB version is a Class 10 micro SD card manufacturing Samsung (the packaging is original, and the blue logo on the card) comes with an adapter. This is a fast card. Installed on a Galaxy S2, recognized immediately without doing anything. I copied a dozen Gigas on this card very quickly inside the smartphone or from a USB key on the PC or PC hard disk: it is turbo! Of course the 32 GB is not available rather 29.23 GB, but it is conventional to lose some ability. A good buy to confidently recommend and possibly reusable card with its adapter on other devices.