The camera's got a reasonably slim profile that's a bit more like an oversized point-and-shoot, slight bulk that's presently largely because of the extended soft grip and big three-inch TFT display on the rear -- and then, of course, there's that 25 mm wide-angle lens with 24x optical zoom that certainly adds a good deal to the camera's footprint when extended.
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).