The jumping seconds mechanism

The RICHARD LANGE JUMPING SECONDS is characterised by an intelligent combination of two mechanisms that functionally complement each other: A one-second constant-force escapement ensures ultimate precision. The jumping mechanism guarantees crisp legibility of the time; it advances the large seconds hand by exactly 60 steps per minute. Thanks to the ZERO-RESET mechanism, equipped with a multi-disc clutch, the watch can be synchronised quickly and comfortably: When the crown is pulled, the seconds hand jumps to the zero position.

[@thabest007]

How is the second hand being driven? I imagine the full force of the mainspring would be too much for the flirt. Does this mechanism need to be combined with the remontoir system?

[@watchiologist8918]

thabest007 i don’t understand how the flirt makes it way around. There must be a spring that may makes it flip like this (like the jumping date mechanism)

[@rc3443]

there's a spring coil under second hand wheel, the main coil charges this smaller coil every x seconds I guess, which is the "constant force" mechanism. that part is not shown here.