Features These new models are based on the BGD-500 Series, making them recreations of the very first DW-520 BABY-G model. This lineup combines popular square design with a choice of three colors: black, pale pink, or white. The matte finish materials of the case and band create a sharp, clean image, and monotone coloring allows these models to go well with simple, adult casual fashions. Water resistant up to 200 meters, these models are a great choice for wear on the beach, around the pool, or other locations where water is present. Case / bezel material: Resin Resin Band Shock Resistant Mineral Glass 200-meter water resistance Electro-luminescent backlight Selectable illumination duration (1.5 seconds or 3 seconds), afterglow World time 29 time zones (48 cities), daylight saving on/off 1/100-second stopwatch Measuring capacity: 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) 5 daily alarms (with 1 snooze alarm) Hourly time signal Full auto-calendar (to year 2099) 12/24-hour format Button operation tone on/off Regular timekeeping: Hour, minute, second, am/pm, date, day Accuracy: ±30 seconds per month Approx. battery life: 3 years on CR1616 Size of case / Total Weight : Size of case : 44.7×40×12.5mm Total weight : 44g