In this case, I’d say we’re dealing with an “if it ain’t broke, don’t fix it” scenario as the Richard Lange Jumping Seconds is a technical marvel, even coming from a brand like A. Lange & Söhne. Under that warm pink gold dial, we find the manually-wound L094.1 movement, which uses a constant-force escapement with a remontoir spring to deliver deadbeat seconds (meaning the watch ticks each second, rather than sweeping). If you’ll allow my attempt to simplify the complication, the remontoir spring (made in-house by Lange) is part of the constant force escapement. It provides a specific amount of energy from the mainspring into the escapement, allowing the precise advance of the prominently featured seconds hand.
If that’s not enough, the Richard Lange Jumping Seconds has a party trick, one that Lange aptly calls the Zero-Reset. It’s a mechanism that actively resets the seconds hand to 60 when the watch is being set, allowing for a more straightforward process of setting the watch against reference timekeeping (such as the clock function in the Hodinkee app). Rounding out the functions, you’ll also note a small triangular aperture in the overlap of the minutes and hours display. This is a low-power indicator for the hand-wound 42-hour power reserve.