Highlights:
Multi-function sport watch featuring 10-year battery, world map, world time (31 time zones, 48 cities), stopwatch, timer, alarms, and auto-calendar (to year 2099)
48-mm stainless steel case with mineral dial window
Quartz movement with digital display
Resin band with buckle closure
Water resistant to 200 m (660 ft): In general, suitable for professional marine activity and serious surface water sports, but not scuba diving

Specifications:

Brand, Seller, or Collection Name Casio
Model number AE-2100W-1AVCF
Part Number AE-2100W-1AVCF
Item Shape Round
Dial window material type Mineral
Display Type Digital
Clasp Buckle
Case material Stainless steel
Case diameter 48 millimeters
Case Thickness 16 millimeters
Band Material Resin
Band length Men's Standard
Band width 26 millimeters
Band Color Black
Dial color Grey
Bezel material Stainless steel
Bezel function Stationary
Calendar Day, date, month, and year
Special features Stop watch, World time, Timer, Light 
Movement Quartz
Water resistant depth 660 Feet