The Classic Core watch from G-shock Watches takes classic styling and loads it up with tech features, giving you a great watch for everyday use. The shock and water resistance keeps the Classic Core watch ticking no matter what happens in your day-to-day life, and the array of alarm, calendar, and timing features let you keep track of everything from major appointments to laps on the track. PRODUCT FEATURES: Shock Resistant 200 Meter Water Resistant EL Backlight with Afterglow Flash Alert Flashes with buzzer that sounds for alarms, hourly time signal, countdown timer time-up alarm 1/100 second stopwatch Measuring capacity: 00 00 00-59 59 99 (for the first 60 minutes) 1:00 00-23:59 59 (after 60 minutes) Measuring unit: 1/100 second (for the first 60 minutes) 1 second (after 60 minutes) Measuring mode: Elapsed time, split time, 1st-2nd place times Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments) Other: Auto-repeat Multi-function alarm Hourly time signal Full auto-calendar (pre-programmed until the year 2039) 12/24 hour formats Accuracy: +/- 15 seconds per month Battery CR2016 Approx. battery life: 2 years DW6900 , g-shock Classic Core Watch , gshock Classic Core watch , Classic Core watch g-shock , Classic Core g shock watch , wrist watches , automatic watches , sports watches , digital sports watch , ironman watches , running watches , led watches , watches , nixon watches , timex watches , timex ironman watches , female watches , ladies digital watches , ladies sports watches , ladies watches , watches for women , watches women , mens watches , mens wrist watches , watches for men , watches mens , wrist watches for men , sports watches for men , waterproof watches , white watches , black watches , altimeter watch , gps running watch , big face watches , big watches , wristtop computers