The iPod shuffle is a digital audio player designed and marketed by Apple Inc. It is the budget model in Apple's iPod family. It was announced at the Macworld Conference & Expo on January 11, 2005, using the tagline "life is random." Instead of storing data on a hard disk, it was the first iPod to use flash memory. The current second generation model weighs about 15 grams (0.55 ounces). It was introduced in September 2006 along with the revamped fifth generation iPod classic and second generation iPod nano.