Wristwatch, has channel formed through glass and arranged such that fluid pumped by pump reaches channel so as to color successively different portions of glass to display temporal indications

摘要

The wristwatch has a mechanical movement placed in a case (1), and a watch glass (6) formed over the case. A fluid pump (5) e.g. gear type fluid pump, is driven by a second wheel of the mechanical movement for pumping fluid i.e. phosphorescent fluid. A channel (60) is formed through the glass and arranged such that the fluid pumped by the pump reaches the channel so as to color successively different portions of the glass to display temporal indications. The channel has a portion with a diameter less than 1 mm.