These are simple vintqge-style wall clocks with the city name printed on the face. The kind of thing you would have seen in some multinational or high flyer's office in the middle of the 20th century. Possibly even a Bond villain. You get the idea.
The clocks offer a choice of London, Paris, New York and Tokyo, with each one around 22.5cm in diameter. As we said, they really need to be in a set for the full effect, but you can buy individually at £35.