Optimized with five-jewel Swiss Movement, CRANKCASE combines impact-forged hand-polished stainless steel with carbon reinforced impact bumpers to make an art of durability. The case is tempered with such precision, it can withstand pressure equivalent to a water depth of 300 feet (100 meters). Pure sapphire is the hardest crystal used in watchmaking, so it was the natural choice for a timepiece of this caliber, especially when we enhanced it with anti-reflective coating. A genuine leather strap offers a comfortable fit. All told, this is a precision instrument that stands up to life’s abuse, and stands out to show the world that style can be as unique as you. Swiss Made, 5-jewel quartz movement Three-hand analog display: hours, minutes, seconds Date by mechanical display Minute and hour hand with luminous material Battery end-of-life indicator 40 month battery 39.4mm case diameter (excluding crown) Impact forged 316L stainless steel Carbon reinforced impact bumpers Screw-dow