Casio G-Shock Black Blue Resin Quartz Alarm Chronograph Mens Watch AW-591-2AER This Casio G-Shock Black Blue Resin Quartz Alarm Chronograph Mens Watch AW-591-2AER provides ultimate toughness to those who equip this timepiece. As is the case with G-Shock watches, it has been passed with a shock resistance mark as labelled on the case. In terms of the dial itself, three subdials can be found at the 3,6 & 9 o\'clock position to display the day, menu selector and timer respectively. Furthermore, at the top of the dial is an auto led display which illuminates at the appropriate time. Surrounding the dial is a black resin case and mineral glass. On the outside of the case are four buttons which are used to access the different modes as displayed in the menu selector. Finally, a black resin strap can be fastened using a standard buckle. This watch has a water resistance of 200 metres, making it suitable for swimming and diving. Key Features: G-Shock Family Black Resin Strap Black Resin Case Alarm Chronograph Shock Resistant Auto LED Light Neo Display World Time Timer Snooze 12/24 Hour Timekeeping Standard Buckle 3 Year Battery Life 200m Water Resistant 46mm Case  Mineral Glass   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.