iPod Shuffle is a small and easily portable music player designed and marketed by Apple, which belongs to the iPod product family. The Shuffle does not have a hard drive, it is based on flash memory and does not have a screen. By default, iPod shuffle works on shuffle, which means that the device randomly draws the next song to be played. Shuffle's memory size is 4 GB in the latest generation and it is charged directly from the USB connection. File transfer is tied to Apple's iTunes program