"Excuse me, sir. Would you happen to have the time?" "Certainly, my good fellow. It is... day." This is about as close to time that the owner of Romain Jerome's Day & Night watch can tell.
The timepiece runs off of Tourbillon movement and only reveals two times - night and day. It was recently for sale at Baselworld, the watch and jewelery industry's largest annual trade fair, for an astonishing $300,000.
Some might say that a watch of this kind is a "waste of time." I, myself, agree with Mark Twain who says "Time and tide wait for no man. A pompous and self-satisfied proverb, and was true for a billion years; but in our day of electric wires and water-ballast we turn it around: Man waits not for time nor tide."