Nivada Grenchen Antarctic Erotic Stem Winding – 320691M04

Nivada Grenchen presents the Antarctic Erotic Stem Winding – a refined timepiece that balances classic design with a discreet sense of playfulness. At first glance, its 38mm stainless steel case, finished with a blend of polished and brushed surfaces, and its elegant ivory-toned dial evoke the timeless charm of the original Antarctic models from the 1950s. It is a watch that wears effortlessly every day, offering clean proportions and enduring style.

Turn it over, however, and the story becomes far more personal. Hidden beneath its understated exterior lies an animated caseback that comes to life during the winding process. Powered by a modified hand-wound Soprod P054 movement, this miniature mechanical automaton transforms a simple interaction into a private, engaging experience—visible only to the wearer. Rooted in a long tradition of discreet watchmaking complications, this feature is designed to be discovered rather than displayed.

Built with durability and comfort in mind, the Antarctic Erotic features a double-domed sapphire crystal, screw-down crown, and 100 meters of water resistance. Inspired by its historic Antarctic legacy, this timepiece offers a distinctive blend of heritage, craftsmanship, and subtle individuality.