iPod shuffle has no clock
Hey, when you take the iPod and make it even smaller some things just won't fit in it anymore. The most obvious thing not included in the iPod shuffle is the screen. The screenless nature of the iPod shuffle doesn't bother me; 'Life is Random' after all, and screens are so last year.
Something I will miss when I get my iPod shuffle (I have my eye on the gig model) is the lack of a clock. I know what you're thinking, 'If it doesn't have a screen why would you need a clock, you time loving fool?' As
Scott Knaster, of Hacking iPod + iTunes,
details without a clock the shuffle can not "Last Played" time and date of a song, potentially screwing up some Smart Playlists that you might have that are based on last played information.