SanDisk Sansa e100 series of small, highly portable digital music players use embedded flash memory to store many hours of digital music. For an enjoyable music-listening experience, the new music players feature high-fidelity sound, a sophisticated yet easy-to-use song navigation and sorting system and a unique design that continues SanDisk's tradition of distinctive styling. The SanDisk Sansa players can store hundreds of songs and play up to 15 continuous hours on a single AAA battery. The new players feature an SD card slot to conveniently add more storage capacity, which can be significant since SanDisk and other companies have recently announced SD cards up to 2GB in capacity. The new players are designed to work seamlessly with a wide range of popular music formats such as MP3 and Windows Media Audio (WMA) in both unprotected and protected files (such as those WMA files purchased from music service provider sites). The SanDisk Sansa music players include stereo headphones, carrying case with armband, USB 2.0 cable, AAA Battery and Install CD with value-added software. For added flexibility, they can be used as a USB storage device. Furthermore, the new industrial design was created with future accessory options in mind