10-YEAR BATTERY LIFE • Face design resembles an aircraft cockpit instrument • World map for World Time • LC Analog display (Home city time) • 100-meter water resistance Basic Information Case size (L× W× H)48.2 × 45 × 13.8 mm Weight40 g Case and bezel materialResin BandResin Band Water resistance100-meter water resistance Power supply and battery lifeApprox. battery life: 10 years on CR2025 Exterior GlassResin Glass / Spherical Glass Compatible band size145 to 215 mm Watch Features World timeMulti Time (4 different cities)31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping Stopwatch1/100-second stopwatchMeasuring capacity: 23:59'59.99''Measuring modes: Elapsed time, split time, 1st-2nd place times TimerCountdown timerMeasuring unit: 1/10 secondCountdown range: 24 hoursCountdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments) Alarm/hourly time signal5 daily alarms or one-time alarmsHourly time signal LightLED lightSelectable illumination duration, afterglow Light colourLED:Amber CalendarFull auto-calendar (to year 2099) Mute featureButton operation tone on/off AccuracyAccuracy: ±30 seconds per month Other features12/24-hour formatRegular timekeeping:Digital: Hour, minute, second, pm, month, date, day