Hamilton Khaki Navy BelowZero 1000m Black Automatic Mens Watch H78585333 46mm Part of the Khaki Navy Hamilton family, this Hamilton Khaki Navy BelowZero 1000m Black Automatic Mens Watch H78585333 46mm is a perfect example of how the craftmanship of watches has evolved over time. The name \'BelowZero\' is used to demonstrate the fact that this watch has a water resistance rating of 1000 metres or 100ATM making it suitable for deep sea diving. A black stainless steel case takes insipiration from the shell of a submarine due to the staggering 100 ATM rating. On the case back is an engraved fish symbol and diving mask. In terms of the black dial, the ever present Hamilton logo sits at 12 o\'clock with a simplistic date window at the 3 o\'clock position. The dial has luminous hands allowing for clear vision at the depths of the ocean where the light begins to fade. The watch has an automatic movement. The case is designed to protect the watch from the extreme pressure of 1000 metres with a specially designed helium escape valve. Extra protection to the dial comes with sapphire crystal glass. Finally, a black rubber strap is fastened using a push button deployment to sit comfortably around ones wrist. Key Features: 1000m Water Resistant Khaki Navy Family Automatic Movement Date Window Sapphire Crystal Glass Helium Escape Valve Black Stainless Steel Case 40 Hour Power Reserve Analogue Display Black Rubber Strap Push Button Deployment Arabic Numerals The Brand: Hamilton Since its foundation in 1892, Hamilton has amassed a reputation as the ultimate provider of accurate timekeeping combined with stylish design. In 1912, the company began producing pocket watches so accurate that they earned the title of “The Watch of Railroad Accuracy.” This lead to the brand being bestowed with the prestigious rank of supplier to the US military at the outbreak of both world wars, and American involvement in the Second World War saw the pioneering Hamilton Marine Chronometer become an invaluable navigational tool for the U.S. Navy. Hamilton in the post-war years has been defined by its unique and exclusive relationship with Hollywood. Beginning with the 1951 Frogman watch, Hamilton watches have featured in over 450 films, including on the wrist of Elvis Presley in 1961’s Blue Hawaii, in 2001: A Space Odyssey, and more recently in Interstellar and The Martian. In 2003, all production and the company headquarters were transferred to a state-of-the-art facility in Biel, Switzerland. Still a global force within the timepiece industry, Hamilton watches offer an unrivalled combination of storied American heritage, Swiss internal workings and a touch of Hollywood flair.