The Armin Strom Mirrored Force Resonance Zeitgeist 1665 asks a wonderfully nerdy question: what if Christiaan Huygens had already cracked resonance back in 1665? The result is a watch that looks both classical and futuristic, a 43 mm stainless-steel case housing an open-worked movement that’s all about mechanical theatre. Twin balance wheels beat in hypnotic harmony, their motion mirrored across the dial like a pair of lungs breathing in sync. A small lacquered white-gold sub-dial handles the timekeeping duties, leaving the rest of the stage to the mechanics. Inside is the in-house calibre ARF21_ZG, with two independent gear trains linked by Armin Strom’s patented resonance clutch spring. The system lets the balances gradually fall into sync, reducing rate variations and boosting stability. Hand-finished to haute-horlogerie standards, it runs at 3.5 Hz and offers an 80-hour power reserve. Only 25 pieces will be made. A technical showpiece that’s as much an essay on physics as it is a watch.