Central second hand. 2416 B automatic movement with 31 jewels. Shock resistant balance. Date calendar. Water proof 200 meters. Totally wound watches run not less than 31 hrs. Average daily rate at temperature 20+-5C -20...+ 60 seconds. Sizes app: Case diameter app. 35mm; Case thickness app. 10mm. Luminescent hands and indices for night visibility. Stainless steel case and bracelet.