Casing / bezel material: Resin Resin Watch Strap Shock Resistant Mineral Glass 200 meters water resistance Electro sparkling backlight Automatic light switch, dual illuminators, selectable illumination duration, incandescent Flash warning Flash with a buzz which is an alarm sound, a time signal count of hours, timeout alarm, countdown timer, progress beeper countdown timer, and automatic stopwatch start Low temperature resistance (-20 ° C) World time 29 time zones (48 cities), summer time on / off Stopwatch 1/100 second (ST1) Measurement capacity: 999: 59'59.99 '' Measurement mode: Elapsed time, split time, first-second position time Other: Automatic start Stopwatch 1/100 second (ST2) Measurement capacity: 999: 59'59.99 '' Measurement mode: Elapsed time, split time, first-second position time Countdown timer Measuring unit: 1 second Countdown time interval: 24 hours Distance setting start time backward: 1 minute to 24 hours (1 minute increment and 1 hour increment) Other: Automatic reset, progress beeper 5 multi-function alarms (with 1 snooze alarm) Time signal counts hours Fully automatic calendar (up to 2099) 12/24 hour format Sound of operation button on / off Regular punctuality: Hours, minutes, seconds, pm, month, date, day Accuracy: ± 15 seconds per month Estimated battery life: 3 years on the CR2025