Case / bezel material: Stainless steel / Aluminum One-touch 3-fold Clasp Stainless Steel Band Mineral Glass 10-year battery life 100-meter water resistance Telememo Memory capacity: Up to 30 sets of data, with 8-character name and 16-digit telephone number Others: Remaining memory screen, auto-sort World time Current time in 30 cities (29 time zones), daylight saving on/off 1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments) 3 daily alarms (with 1 snooze alarm) Hourly time signal Full auto-calendar (to year 2099) 12/24-hour format Regular timekeeping Analog: 2 hands (hour, minute (hands move every 20 seconds)) Digital: Hour, minute, second, am/pm, month, date, day Accuracy: ?ñ30 seconds per month Approx. battery life: 10 years on CR2025 Size of case : 51.6??46.6??14.2mm Total weight : 161g