World time38 time zones (38 cities + Coordinated Universal Time), city code display, city name display, daylight saving on/off, automatic summer time (DST) switching, Home City/World Time City swapping Stopwatch1/100-second stopwatchMeasuring capacity:00'00''00 to 59'59''99 (for the first 60 minutes)1:00'00 to 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, lap/split time TimerCountdown timerMeasuring unit: 1 secondCountdown range: 60 minutesCountdown start time setting range: 1 second to 60 minutes (1-second and 1-minute increments)Other: Progress beeper Alarm / hourly time signal5 daily alarms (with progress beeper)Hourly time signal LightDouble LED lightLED light for the face (Super Illuminator, selectable illumination duration of 1.5 seconds or 3 seconds, afterglow)LED backlight for the digital display (Super Illuminator, selectable illumination duration of 1.5 seconds or 3 seconds, afterglow) Light colorLED: White CalendarFull auto-calendar (up to year 2099) Mute featureButton operation tone on/off Energy saving featurePower saving (the display goes blank to save power when the watch is left in the dark) Battery display / alertBattery level indicator Run timeApproximate battery operating time:7 months on a rechargeable battery (normal use without exposure to light after full charge)18 months on a rechargeable battery (stored in total darkness with the power saving function on after full charge) AccuracyAccuracy: ±15 seconds per month (without mobile link function) Date Bracelet Fixed World time38 time zones (38 cities + Coordinated Universal Time), city code display, city name display, daylight saving on/off, automatic summer time (DST) switching, Home City/World Time City swapping Stopwatch1/100-second stopwatchMeasuring capacity:00'00''00 to 59'59''99 (for the first 60 minutes)1:00'00 to 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, lap/split time TimerCountdown timerMeasuring unit: 1 secondCountdown range: 60 minutesCountdown start time setting range: 1 second to 60 minutes (1-second and 1-minute increments)Other: Progress beeper Alarm / hourly time signal5 daily alarms (with progress beeper)Hourly time signal LightDouble LED lightLED light for the face (Super Illuminator, selectable illumination duration of 1.5 seconds or 3 seconds, afterglow)LED backlight for the digital display (Super Illuminator, selectable illumination duration of 1.5 seconds or 3 seconds, afterglow) Light colorLED: White CalendarFull auto-calendar (up to year 2099) Mute featureButton operation tone on/off Energy saving featurePower saving (the display goes blank to save power when the watch is left in the dark) Battery display / alertBattery level indicator Run timeApproximate battery operating time:7 months on a rechargeable battery (normal use without exposure to light after full charge)18 months on a rechargeable battery (stored in total darkness with the power saving function on after full charge) AccuracyAccuracy: ±15 seconds per month (without mobile link function)