Another great invention from SanDisk, the microSD is about a quarter of the size of an SD card and is the newest standard of SD flash memory specifically designed for use with ultra-small mobile phones and other devices.
Like the miniSD, the microSD/TransFlash is ideal for use in storing media-rich files such as music, videos, and photographs in compatible mobile phones.
SD Adapter Included
This microSD card come bundled with a microSD to SD card adapter, allowing you to use your microSD card in any device that accepts traditional SD cards, such as your digital camera, laptop, or another smartphone.
Card Reader Included
Sandisk microMate Card Reader included.
Note: If most BlackBerry is running a version of the BlackBerry Operating System older than version 4.2.1, the 4GB microSDHC card may not be recognized. Upgrading to BBOS v4.2.1 should permit the use of this card.
Visit BlackBerry.com and the CrackBerry Forums for more information