One of the most interesting Lange debuts this year was the Richard Lange Jumping Seconds. Introduced at SIHH 2016, the watch is distinguished by its regulator dial that separates the hours, minutes, seconds on separate axises. Most importantly, the seconds hand, in particular,
jumps in one-second intervals. At first glance, you might think it is quartz movement that powers the hands, particularly because the seconds hand on a quartz watch also jump in one-second intervals, instead of smoothly sweeping like the majority of mechanical timepieces. But this is far from quartz.
Driven by a one-second constant-force escapement, the so-called
deadbeat seconds feature, when combined with the zero-reset mechanism, makes it so you can out the crown, instantly causing the seconds hand to jump to 12 o’clock and stop, allowing you to quickly and precisely synchronise the timepiece. And thanks to the constant force, the amplitude is consistent throughout the entire 42-hour power delivery, further increasing the accuracy of the timepiece — via PROFESSIONAL WATCHES