The Omega Chronostop Ref. 146.009 is a striking piece from the late 1960s, standing for the spirit of experimentation that defined Omega during that era. It features a unique one-button chronograph mechanism, powered by the reliable Caliber 920. Unlike traditional chronographs, the Chronostop is operated with a single pusher: press once to start the timing, press again—and instead of stopping, it snaps back to zero. This quirky "stopless" reset function is both ingenious and amusing, and it speaks to Omega’s playful yet technical approach at the time.

The case design is sleek and bold, reminiscent of the Omega Cosmic models, with a tonneau-shaped case that wears comfortably and looks unmistakably vintage. The dial is a matte charcoal tone, kind of a tool-watch aesthetic, while the bright orange central seconds hand provides a contrast.

Fitted with a vintage-style mesh bracelet, this watch walks the line between sporty functionality and elegant minimalism. With its rare movement, unconventional chronograph function, and stylish design, the Omega Chronostop 146.009 is a standout piece for any collector of vintage mechanical watches.