Case Material- Resin (Round). Case Diameter- 50 mm. Case Thickness- 20 mm. Band Material- Resin. Band Color- Black. Band Width- 15 mm. Dial- Gray (Analog-Digital Display). Crystal- Acrylic. Bezel- Resin (Stationary). Movement- Quartz. Clasp- Buckle. Water Resistance- 100 meters (Suitable for swimming and snorkeling). Functions- Chronograph Lap Time Pacers Five Alarms Dual Time Military Time 100 Year Calendar (Day-Date-Month) Countdown Timer Hourly Chime and Backlight (with three second delay).