Zenith produced a ladies' version of the Sporto watch, which came in a case size of approximately 24mm. These women's models are less common than their larger male counterparts, making them a rarer find for collectors. Movement: These watches use a smaller manual-winding mechanical movement Zénith 88.8-6 mechanical sub-second movement shielded by dust cover. Design: Like the men's version, they were designed as robust, everyday watches with clean, classic styling.