For the best you can get in functionality go for the Casio G-Shock Gold Dial Digital Black Watch GD100GB-1. This impressive timepiece features Multi Time, Mineral Glass, Flash and Buzz Alerts, LED Backlight, stopwatch, measuring modes and so much more.
Water Resistance: 200m
Watch Material: Resin
Watch Features: Alarm|Date & Day|Digital|Multifunction|Shock Resistant|World Time
Watch Warranty: 2yrIncludes Watch Gift Box