40mm diameter. Caliber 4R36 with manual and automatic winding capabilities. 24 jewels. 21,600 vibrations per hour. Approximately 41 hours of power reserve. Luminous hands and markers. Stainless steel cases and bracelets. Bilingual day and date calendars (English and Japanese). Edition of 888 per design. Made in Japan. Scuff on top lug other than that in great condition comes with box and papers. Feel free to message me with any questions.