I think that this is just a really cool little gadget for the frequent traveler.  The face of this travel clock doesn’t have numbers, so any side could be up.  All around the side are cities that represent different time zones.  Set it to your time zone and then roll it so that the time zone you need is up.

The Waals World Time Clock is available in black plastic or stainless steel.  It’s ultra compact size will fit almost anywhere.  Search for item number 201874 at Red Envelope.