Resin Glass / Spherical Glass 50-meter water resistance Case / bezel material: Resin / Stainless steel Stainless Steel Band One-touch 3-fold Buckle Solid Band LED light Afterglow World time 29 time zones (27 cities), city code display, daylight saving on/off 1-second stopwatch Measuring capacity: 59’59Measuring modes: Elapsed time, split time, 1st-2nd place times Countdown timer Measuring unit: 1 secondCountdown range: 60 minutesCountdown start time setting range: 1 to 60 minutes (1-minute increments) Others: Auto-repeat, time up alarm, progress beeper on/off Daily alarms 5 independent daily alarms (4 one-time alarms and 1 snooze alarm) Hourly time signal Auto-calendar (to year 2039) 12/24-hour format Regular timekeeping Analog: 2 hands (Hour, minute (hand moves every 20 seconds))Digital: Hour, minutes, seconds, pm, month, date, day Accuracy: ±30 seconds per month Approx. battery life: 2 years on SR726W X 2 Size of case: 38.5 X 35.5 X 12.6 mm Total weight: 63 g