Imported Adjustable black 22mm resin strap fits up to 8-inch wrist circumference 100-hour chronograph; 24-hour countdown timer; 3 vibrating and audible daily, weekday or weekend alarms; shock resistant to I.S.O. standards 24-hour military time mode; 3 time zones; occasion reminders; hydration timer; month, day and date calendar Black 50mm resin case with acrylic lens; negative digital display; Indiglo light-up watch dial Water resistant to 200m (660 ft): In general, suitable for professional marine activity and serious surface water sports, but not scuba diving Note : Do not to press buttons while submerged.