Oris Watch Aquis Date Calibre 400 Green Rubber 01 400 7769 4157-07 4 22 74FC. With a strong focus on the joy of mechanics, the 41.5mm Oria Aquis watch promises that same real world functionality but now with the fully homegrown Calibre 400. This calibre, offering a staggering five day power reserve, is the result of elaborate research and extensive development carried out in house. The movement is particularly anti magnetic and features a twin barrel to promise its impressively long power reserve. To achieve this, each barrel features and extended mainspring that produces two and a half days of power reserve. Built for daring underwater exploration, the Oris Aquis Date watch is crafted from a multipiece stainless steel construction with anti glare properties built into its domed sapphire crystal glass front. In addition to this, it features a sapphire crystal glass caseback, enabling the wearer to admire the beautiful performance of the Calibre 400. The dial side of this Oris Aquis Date watch is executed in an intense and rich, deep green colour. The hour indexes and central hands have been treated with Super Lumi Nova material, while the date aperture resides in its usual location at 6 o’clock. The matching green unidirectional rotating bezel can be used to time underwater durations thanks to its 60 minute dive scale and the watch also comes fitted to a supple black rubber strap engraved with the iconic Oris lettering. This Oris Aquis Date Calibre 400 41.5mm watch is 300 meter water resistant and features a crown protecting system that not only shields the crown from bumps and unforeseen impact but prevents water seeping into the internal environment of this impeccably crafted diver’s watch. Special Features; Men’s 41.5mm Oris Aquis Date Calibre 400 41.5mm watch Green dial with luminous hour markers and central hands Lollipop second hand Date window at 6 o’clock Powered by the in house designed Oris Calibre 400 5 day power reserve with twin barrels and anti magnetic technology 300 meter water resistant multipiece stainless steel case Green ceramic unidirectional rotating bezel with 60 minute dive scale Domed sapphire crystal glass front Flat sapphire crystal glass caseback exposing the movement Black rubber strap with steel folding clasp and diver extension facility Official UK stockist of genuine Oris watches Ten year warranty on this Oris watch