Hitachi's little showing caused quite the crowds at its CEATEC booth, with a pair of 2.5-inch QVGA prototypes built using Pixtronix's PerfectLight MEMS display tech within a LCD infrastructure.
Besides the addition of a built-in speaker, the main changes here involve screen size and battery life: the V30K sports a 3.5-inch TFT LCD (compared to the 2.5-incher on the S, though both share the same QVGA resolution) and promises up to 8 hours of video or 25 hours of audio playback on a full charge (as opposed to the meager 2.5 and 12 hour lifespans for video and audio, respectively, on the S).