Beneath a serene regulator dial hides three technical showstoppers: a true jumping seconds, a constant-force escapement, and the ZERO-RESET mechanism; together, they make Lange’s L094.1 calibre a precision powerhouse
At first glance, the Richard Lange Jumping Seconds looks deceptively calm, with its clean regulator layout and large, sweeping seconds hand. But beneath the surface, it carries a lineage of precision that stretches back almost 150 years.
The jumping seconds itself is a direct nod to Ferdinand Adolph Lange, who in 1867 created a pocket watch with a “seconde morte”—a seconds hand that moved in precise one-second ticks. His sons refined the mechanism in 1877, patenting the “seconds movement with jumping seconds.”
Today, Lange’s engineers follow the same principles: a star and a flirt leverage the balance’s six semi-oscillations to advance the seconds hand in exact steps. The star rotates every five seconds, and the flirt snaps through 360 degrees each second, giving the hand its crisp, almost mechanical pulse.
The watch’s constant-force escapement is where the modern engineering really shines. Lange has long been obsessed with smoothing out the highs and lows of mainspring torque, from the fusée-and-chain system in 1994 to several dedicated escapements since.
In the Richard Lange Jumping Seconds, the mechanism does double duty: it keeps the remontoir spring topped with energy for each seconds jump, while compensating for the mainspring’s waning torque.
The result is a perfectly stable amplitude throughout the watch’s 42-hour power reserve, with rate stability further reinforced by a cam-poised balance and free-sprung, in-house hairspring.
Rounding out the trio is the ZERO-RESET mechanism, a refined solution first seen in the SAX-0-MAT. A multidisc clutch ensures the large seconds hand doesn’t wobble during sudden jumps.
Pull the crown, and a ballet of levers stops the balance, disengages the hand, and snaps it to zero. Push it back, and the hand re-engages instantly while the balance starts ticking again. It’s a small flourish, but it makes setting the watch a near-magical experience.
The Richard Lange Jumping Seconds is a story in motion. Every tick, every jump, is a tribute to Saxon watchmaking heritage and Lange’s relentless pursuit of technical perfection. It’s one of those watches where looking at the dial is just the start; the real fascination lies in what’s happening under the hood.
