The new NWZ-E570 series Walkman

The E570 series Walkman also runs Android 4.0 and has a 2-inch QVGA LCD screen and will come in an 8GB model capable of holding 1,750 songs as well as a 16GB model with capacity for 3,650 songs. Pricing information is currently unavailable.

It's hard to imagine our lives without portable music--nowadays most of us can fit our entire music collection into an MP3 player the size of a deck of cards. But 30 years ago, as people hefted boom boxes off their shoulders, they ooohed and ahhhhed in fascination at a little machine called the Walkman.

Originally, portable cassette players were marketed for people who needed to record audio clips for their work, like journalists and businesspeople, but Sony's Walkman brought the idea of playing cassettes to the masses. Not only did many Walkmans have a cassette player, an AM/FM dial, and dual headphone jacks, they also had cool features like autoreverse, play, and record.

Click ahead for a memory-lane walk, man.