Casio Tough Solar AQ-S810WC-4AVDF AQ-S810WC-4A Illumir Watch

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: 59'59.99''
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: 00'05 to 99'55 (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)
Accuracy: ±30 seconds per month
Approx. battery operating time:
10 months on rechargeable battery (operation period with normal use without exposure to light after charge)
23 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Size of case: 52.2 X 46.6 X 13.8 mm
Total weight: 39.5 g
LED:Umber