Case size (L× W× H) 50.3 × 47 × 18.7 mm Weight 75 g Case and bezel material Case / bezel material: Carbon / Stainless steel Band Case / bezel material: Resin Construction Shock Resistant Carbon Core Guard structure Water resistance 200-meter water resistance Power supply and battery life Approx. battery life: 3 years on CR2016 Smartphone Link feature Mobile link (Wireless linking using Bluetooth) Apps CASIO WATCHES App connectivity feature Auto time adjustment Easy watch setting Approximately 300 world time cities App information Time & place Phone finder Mineral Glass Compatible band size 145 to 215 mm World time World time 38 time zones (38 cities + coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping Stopwatch 1/100-second stopwatch Measuring 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 times Timer Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments) Alarm/hourly time signal 5 daily alarms Hourly time signal Light LED backlight (Super Illuminator) Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow Light color LED:White Calendar Full auto-calendar (to year 2099) Mute feature Button operation tone on/off Accuracy Accuracy: ±15 seconds per month (with no mobile link function) Other features 12/24-hour format Date/month display swapping Day display (days of the week selectable in six languages) Regular timekeeping: Hour, minute, second, pm, month, date, day