It's got a fold-out flap, like the old-school Ericsson T28 of the early 2000s, which covers the main keypad when not in use. While this flap is closed, however, you can use some dedicated MP3 ...

Sony Ericsson Summer 2005 Intro W600 1 W600 2 Z520 Accessories Comments 28 Both the W600 and Z520 use Sony Ericsson's new accessory connector, which was first introduced on the K750 and W800.

Although the Sony Ericsson menu interface is 3 years old now, you'd never know it. SE continues to update and improve the menus, not just making them more user friendly, but also faster.