Despite having the same invisible OLED display, the flash Walkman doesn't pack quite the same 'wow' factor as the hard drive model. There are three sizes, 512 MB, 1GB and 2GB. There is a built-in FM tuner, clock and jog dial. Sony is boasting 50 hours of play time (at 132 kbps in power save mode, ha!). Comes in violet, silver, blue, pink and limited edition gold for a few more pieces of silver. The price is crazy expensive: The 512MB is $199 (vs. 2GB iPod nano for $199) and the 2GB is $290 (vs. 4GB nano for $249). But this is based on Japanese Yen equivalency and I expect Sony will want to be more competitive with the nano in the U.S.