As Stephen mentions in our Introducing coverage for this year’s new model, the Richard Lange Jumping Seconds watch was first introduced in platinum, with a follow up in rose gold; both watches have white dials, and this year’s newest version is in a new metal for the model – white gold – with a deep black dial. The watch is otherwise technically identical to previous Richard Lange Jumping Seconds watches. It is fitted with a remontoire, which is a device designed to improve rate stability over the entire power reserve by providing constant torque to the escapement – this is done by means of a spiral spring on the fourth wheel, which turns the fourth wheel and which is periodically rewound by the mainspring. In the case of the Richard Lange Jumping Seconds, the remontoire spring is re-armed once per second, and the arming mechanism also powers the jumping seconds (there are several ways to implement a jumping seconds hand; driving one off a train remontoire is the most complex, but it also avoids one of the potential pitfalls of some of the other designs, which can interfere with accuracy).