G-Shock Mens Watch. . . With full 200M WR, Shock Resistant, 24 Hour stopwatch and countdown timer, standard issue never looked this good. Shock Resistant; 200 Meter Water Resistant; EL Backlight with Afterglow; Daily Alarm; Countdown Timer; Input range: 1 minute to 24 hours; Measuring unit: 1 second; Auto-repeat function; 1/100 second stopwatch; Measuring capacity: 23:59'59.99"; 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; Hourly Time Signal; Auto Calendar (pre-programmed until the year 2039) 12/24 Hour Formats; Accuracy: +/- 15 seconds per month; Battery: 2 years on CR2016.