iPod is a brand of portable media players designed and marketed by Apple and launched in 2001. Devices in the iPod range are primarily digital audio players, designed around a central click wheel — although the iPod shuffle has buttons only. As of October 2005, the line-up consists of the video-capable fifth generation iPod, the smaller iPod nano, and the display-less iPod shuffle. The full-sized model stores media on an internal hard drive, while the smaller iPod nano and iPod shuffle use flash memory. Like many digital music players, iPods can also serve as external data storage devices. In January 2007, Apple announced the iPhone, a device that combined the features of the video-capable iPod with mobile phone and mobile Internet capabilities.