Casio AQ-S810WC-4AVDF

Resin Glass
Neobrite
100-meter water resistance
Case / bezel material: Resin
Resin Band
LED light (LCD part only)
Selectable illumination duration, afterglow
Solar powered
World time
31 time zones (48 cities + coordinated universal time), city code display, daylight saving on/off, Home city/World time city swapping
1/100-second stopwatch
Measuring capacity: 5959.99
Measuring modes: Elapsed time, split time
2 countdown timers
Can be used during interval training that alternates between two different paces.
Measuring unit: 1 second
Input range: 0005" to 9955" (1-minute increments and 5-second increments)
Other: Number of repeats settable from 1 to 10
5 daily alarms
Hourly time signal
Battery power indicator
Power Saving (display goes blank to save power when the watch is left in the dark)
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off
Regular timekeeping: Hour, minute, second, pm, month, day, 6-language day of the week indicator (English, Portuguese, Spanish, French, German, Italian)