One of the great things about SanDisk’s line of Sansa MP3 players it the microSD card slot. All of them have this feature except for the Sansa Clip. This means you can double, sometimes triple the capacity of the player relatively cheap. The microSD slot is a great future proofing or rather life extending feature on an MP3 player.
While SanDisk Sansa players lead the industry in upgradable and removable storage there are a few others that contain that will be able to take advantage of this microSD card. These players include the Insignias, the Cowon D2, Creative Zen, and some of the newer irivers like the E100 and the Spinn.