G-Shock GD100GB The basic black motif is accented by gold gears and dials that give these watches a mechanical look.

Mineral Glass
Shock Resistant
200-meter water resistance
Case / bezel material: Resin
Resin Band
LED Backlight
Auto light switch, selectable illumination duration, afterglow.
Flash alert
Multi time (4 different cities)
World time
31 time zones (48 cities coordinated universal time)
Countdown timer
Stopwatch
5 alarms (daily or one-time)
Hourly time signal
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off