Casio G-Shock Sports Military Style Alarm Chronograph Mens Watch GD-100MS-3ER 51mm This Casio G-Shock Sports Military Style Alarm Chronograph Mens Watch GD-100MS-3ER 51mm uses a compact shock resistant case to contain the powerful technology which comes with this watch. The dial uses a full digital LCD digital display to portray the functions that this watch provides. At the very top of the case is the ever present Casio G-Shock logo. At the top of the dial itself is a digital display to display the day and date with the real time appearing just below. Seperating these two displays are chronographs used as countdown timers. This watch has an astonishing 7 year battery life. Finally, a green resin strap is fastened using a standard buckle to sit comfortably around ones wrist.  This watch has a water resistancy of 200 metres, making it suitable for swimming and diving. Key Features: G-Shock Family Sports Military Style Alarm 7 Year Battery Life Chronograph LED Light 200m Water Resistant Countdown Timer +-15 Seconds Per Month 5 Daily Alarms Automatic Calendar Day/Date Display Low Temperature Resistant Mineral Glass Shock Resistant World Time Vibration Resistant         The Family: G-Shock At a time when watches were seen as fragile, delicate instruments, Casio’s head of watch design, Kikuo Ibe, set out in 1981 to create “a watch that doesn’t break, even when dropped.” After 200 prototypes and two years of development, the Casio G-Shock was launched in 1983. Gaining its now legendary toughness from Ibe’s revolutionary decision to suspend the module inside a hollow rubber structure, the G-Shock has been the go-to name in superbly durable and precise wristwear ever since.  The Brand: Casio Casio was established in 1946 by Japanese engineer Tadao Kashio. The company entered the timepiece market in 1974 with the release of the Casiotron, the world’s first Auto Calendar watch. Only eleven years after entering this field, Casio completely reshaped global thought about the function a watch should perform with the release of the pioneering and now legendary G-Shock family. Innovation and world firsts have defined the company’s history ever since, the most striking of these being the release of the first ever touch screen watch in 1991, 24 years before the Apple Watch, and the first ever wrist camera watch in 2000. In short, Casio was producing smartwatches decades before the term had even been coined. Add to this the hipster popularity of the company’s retro designs, and Casio has firmly cemented its reputation as a famously reliable and precise name in both analogue and digital watches.