The MP330 has a cautiously crafted smooth figure that is very dense (83mm x 25.5mm x 11.5mm) and frivolous (just 25g). In addition, the MP330 is prepared with a detachable sport clip that provides users more suppleness to match their listening habits. The player features an OLED display to ease presentation at different angles, even in broad daylight. The MP330 also doubles as a moveable storage device. Thanks to its fixed USB connector, the MP330 operates just like a USB flash drive, letting users to transfer files.

The MP330 also boasts of a set of value-added purposes. The player's series mark can be used to record music from an exterior source such as a CD player, while its A-B repeat, variable track playback speeds. It also approaches with a voice recorder aspect. The MP330 includes an FM radio and sing-along harmonized lyrics display with support for 14 different languages.