as my previous post says, Sony ericsson launched two revolutionary phones simultaneously. one is Sony ericsson XPERIA X10 and this one is Sony Ericsson XPERIA Pureness. this phone is a fashion phone and it's very differ from X10 because pureness has very less features as it's name.
but this phone has it's own theme all over the phone. it has a grayscale display which matches to it's body colour and has 240 x 320 pixels resolution. also XPERIA Pureness is a 3G phone which supports HSDPA as well. also it has 88MB internal memory.
Unfortunately this phone doesn't has a camera. i think it's grayscale display may be the reason. but it has a very good media player and sound quality.