Verbatim has just announced their upcoming line of InSight external USB hard drives, which are unique in that they continuously display their name and available capacity on an LCD display even without power. As one would expect from a USB HDD, they are Windows and OS X compatible, but the included Nero BackItUp software is Windows-only.
The InSight drives should be available now in 320GB and 500GB capacities for $119.99 and $149.99 respectively.
