Resin, Stainless Steel; Mineral GlassPeg And Buckle ClosureWater resistant to 20 ATMLimited One-Year Casio WarrantyImportedStyle: GM-2100-1ASize49.3mm × 44.4mm × 11.8mmFeaturesNeobriteShock ResistantDouble LED lightLED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)World time31 time zones (48 cities + coordinated universal time), daylight saving on/off1/100-second stopwatchMeasuring 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 modes: Elapsed time, split time, 1st-2nd place timesCountdown timerMeasuring unit: 1 secondCountdown range: 24 hoursCountdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)5 daily alarmsHourly time signalHand shift featureFull auto-calendar (to year 2099)12/24-hour formatButton operation tone on/offRegular timekeepingAnalog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day)Digital: Hour, minute, second, pm, month, date