5 Sports SBSA005 Mechanical Automatic manual Date and Day Black SKX Stainless Case [Seiko Watch] Men's Watch, Japanese-made (with winding), Calendar,

• Includes original packaging box and global warranty (3 years). Mechanical automatic winding (with manual winding) Daily difference +45 seconds to -35 seconds Power reserve: Approximately 41 hours when fully wound. Includes a calendar function (date and day of the week).