As MP3 players continue their, it's getting difficult even to identify what they are at first sight. The latest version of Sony's Walkman making its Japan debut, for example, could be mistaken for a USB key or dongle, measuring just over 3 inches long and weighing only 1 ounce.
In fact, as Akibahara News notes, the E Series players can be used as a USB drive too. But that would make it a pretty expensive storage device, going for about $92 to $167 for versions ranging from 1GB to 4GB, providing up to 30 hours of playback. They also include a color OLED screen and come in various exterior hues as well. But if it's green you're after, you might have to search out one of the rare " " special editions.