The G-Shock Combi with LED backlight features 5 alarms, 1/1000th second stopwatch, world time, countdown timer, average speed calculation and 200m water-resistant. 

Incorporating all the quantities you would expect from a G-Shock i. E. Tough, shock-proof construction with rugged good looks that stand the test of time. 

Model number GA-100-1A4ER.

Watch features:

Scratch resistant glass.
Black and grey dial.
Easy to read dial.
Resin case.
Black resin strap.
Buckle clasp.
Quartz movement.
Water resistant to 200m.
Dual time display.
Date and day display.
World time.
Countdown timer.
Manufacturer's 2 year guarantee.

Casio Men's G-Shock World Timer Watch