Pulsar Men's PW3001 Collection Watch Case diameter: 43.5 mm World time Black ion finish Caliber : W602 Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving Case diameter: 43.5 mm. World time. Black ion finish Caliber : W602. Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving When a new normal battery is installed, this watch operates for approximately three years. However, If the alarm sounds more than 20 seconds a day, if the built-in illuminating light is turned on more than once a day, and/or if the timer is used more than once a day, the battery life may be shorter than the specified period. l As the battery is inserted at the factory to check the functions and performance of the watch, its actual life once in your possession may be less than the specified period. l When the battery expires, be sure to replace it as soon as possible to prevent any malfunction. l We recommend that you contact an AUTHORIZED PULSAR DEALER for battery replacement. l Battery life indicator When the battery nears its end, all the digits start flashing. In that case, immediately have it replaced with a new one by the retailer from whom the watch was purchased. Necessary procedure after battery change After the battery is replaced with a new one or if an abnormal display (broken digits, etc.) appears, follow the procedure below to reset the IC. Keep buttons A, B, C and E pressed at the same time for 2 to 3 seconds. The display will become blank, and "1-1 AM 12:00oo" will be displayed as the buttons are released. l Before using the watch, set the time/calendar and alarm.