With the Open Gear Flying Tourbillon Underworld, Chronoswiss delivers a striking meditation on mechanical spectacle and artisanal depth. Limited to 15 pieces, the watch presents a bold 44mm stainless steel case housing a hand guilloché black dial that feels immersive and deliberate. Beneath the surface, a richly colored purple movement adds tension and contrast, reinforcing the brand’s long standing fascination with visual drama and technical transparency. At six o’clock, the flying tourbillon commands attention. Its presence anchors the dial and gives rhythm to the composition, inviting prolonged observation rather than a quick glance. The open gear architecture encourages engagement with the mechanics, allowing the wearer to appreciate the choreography of wheels and springs that define fine horology. The purple alligator strap, subtly luminous in low light and lined with Alcantara, completes the experience with a tactile elegance that feels intentional rather than ornamental. According to Oliver Ebstein, CEO of Chronoswiss,, the Underworld concept is about revealing the rarely seen layers of watchmaking, and that ethos resonates throughout the piece. Rooted in four decades of independent watchmaking, Chronoswiss continues to challenge expectations while remaining unmistakably itself.