Casio STL-S100H-1AV Amethyst

Tough solar (11 months without exposure to light) (+/-30 seconds per month)

Resin glass

LED light (selectable illumination duration, afterglow)

Resin case with resin band

100m

Thickness: 12.7 mm
Diameter: 45.4 mm
Length: 51.4 mm

World time (31 time zones)
1/100-second stopwatch
2 countdown timers
5 daily alarms
Hourly time signal
Battery level indicator
Power saving (display goes black and hands stop to save power when left in the dark)
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off
Regular timekeeping (digital display)