Orient by Seiko Automatic Men's World Time Watch

Japanese automatic movement Stainless steel watch case and bracelet Black watch dial with white Roman numerals Inner rotating bezel World-Time Luminous hands Continuous operation time of more than 40 hoursPower reserve indicatorDate display at 12 o'clock subdial Curved sapphire crystal50-meter water resistanceButterfly clasp Case dimensions: 16 mm thick x 39 mm wide x 50 mm long Bracelet dimensions: 20 mm wide x 8.5 inches long All measurements are approximate and may vary slightly from the listed information. Watch bands can be sized to fit 7.5-inch to 8.5-inch wrists. Extra links are available through the manufacturer. (We do not provide this service.) This watch is powered by automatic movement which means the winding of the spring occurs automatically when the wearer moves his/her arm. However, it is recommended that you manually wind the watch at least once every two weeks. It is also important to adjust the time once a month as automatic movement can gain or lose a few minutes per month.