Movement: quartz; digital display Case: round resin with mineral dial window; 48.5mm Strap: rubber Closure: buckle Accuracy: /- 15 seconds per month EL Backlight with afterglow Shock resistance Daily alarm Countdown timer Input range: 1 minute to 24 hours Auto-repeat function 1/100 second stopwatch Hourly Time Signal 12/24 hour auto calendar (pre-programmed until 2039) Water resistance: 200 meters (600 ft.)