5 Sports SBSA201 Made in Mechanical Automatic manual Date and Day Field Mid Nylon Strap Black Stainless Steel [Seiko Watch] Men's/Unisex Watch, Japan,

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