The PNY 4GB Class 4 Micro SDHC Memory Card with SD Adapter is the ideal companion for multimedia phones. It provides the immediate expansion of memory storage needed for carrying more music, video, photos, games, and mobile software applications in the latest generation of phones. The PNY 4GB Class 4 Micro SDHC Memory Cards with SD Adapter is smallest memory card in the world. It's also the newest standard SDHC flash memory format, specifically designed for ultra-small mobile phones. In addition to the SD Card adapter, it even comes with a carrying case for added convenience and portability.