Accuracy Accuracy: ±15 seconds per month Alarm/hourly time signal 5 daily alarmsHourly time signal Calendar Full auto-calendar (to year 2099) Light Double 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) Mute feature Button operation tone on/off Other features 12/24-hour formatHand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)Regular timekeeping:Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day)Digital: Hour, minute, second, pm, month, dateAnalog: 2 hands (hour, minute (hand moves every 20 seconds))Digital: Hour, minute, second, pm, month, date, day Stopwatch 1/100-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 timesMeasuring capacity: 00'00''00~59'59''99 (for the first 60 minutes)Measuring unit: 1/100 second (for the first 60 minutes) Timer Countdown 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) World time World time31 time zones (48 cities + coordinated universal time), daylight saving on/off31 time zones (48 cities + Coordinated Universal Time), daylight saving on/off