Case / bezel material: Resin / Aluminum Resin Band 200-meter water resistance Mineral Glass Shock Resistant LED Backlight (Super Illuminator)Auto light switch, selectable illumination duration, afterglow.Flash alertFlashes with buzzer that sounds for alarms, hourly time signal, countdown timer time

Case / bezel material: Resin / Aluminum Resin Band 200-meter water resistance Mineral Glass Shock Resistant LED Backlight (Super Illuminator)Auto light switch, selectable illumination duration, afterglow.Flash alertFlashes with buzzer that sounds for alarms, hourly time signal, countdown timer time up alarmMulti Time (4 different cities)World time31 time zones (48 cities coordinated universal time), daylight saving on/off, Home city/World time city swapping1/100-second stopwatchMeasuring capacity: 23:59'59.99''Measuring modes: Elapsed time, split time, 1st-2nd place timesCountdown timerMeasuring unit: 1/10 secondInput range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)Daily alarms5 independent daily alarms (One-time or Daily)Hourly time signalFull auto-calendar (to year 2099)12/24-hour formatButton operation tone on/offRegular timekeepingDigital: Hour, minute, second, pm, month, date, dayAccuracy: ±15 seconds per monthApprox. battery life: 3 years on CR2016 Size of case/total weight: 55.1 X 52.5 X 16.3 mm/69 g LED:Blue