Marathon 41mm Steel Navigator w Date (SSNAV-D) Nylon DEFSTAN WatchA robust tool watch that represents a fully re-engineered upgrade to Marathon’s original Steel Navigator, developed in partnership with the Kelly Air Force Base in 1986. The Steel Navigator with Date boasts enhanced functionality and unmatched accuracy that caters to pilots, parachutists, and adventurers. With the ETA F06.412 HeavyDrive-PreciDrive Quartz movement, the 41mm Steel Navigator with Date (SSNAV-D) stands out with unmatched precision, featuring accuracy of ± 10s/year. This model also exhibits a date complication - a first for any Steel Navigator since the design’s initial launch in the 1980’s. The SSNAV-D is built from 316L surgical-grade stainless steel with a screw-down crown and synthetic sapphire crystal, making it operational even when submerged to 10ATM (100m/300ft). Self-contained tritium gas tubes on the hour markers, and minute/hour hands ensuring constant visibility in low-light environments. Tritium tubes are self-illuminating, containing an isotope of hydrogen that won't dull down over time like photoluminescent paint, meaning the watch will remain fully legible at all hours. Protecting the dial of the SSNAV-D is a highly durable sapphire crystal. This allows the watch to withstand extreme changes in air pressure – necessary for the watch’s use by military pilots at altitudes of over 35,000ft – while also providing scratch resistance and pristine clarity. The SSNAV-D is Swiss-made and Canadian-designed for premium quality and craftsmanship.Movement: ETA F06.412 HeavyDrive-PreciDrive QuartzNo of Jewels: 3Scale Quantity: 2Scale Range: 1-12 (13-24)Calendar Type: DateLuminous Features: Tritium Gas TubesCrystal Material: SapphireCrown Type: Screw-DownCase Material: 316L Stainless SteelCase Finish: ParkerizedBezel Type: Bi-DirectionalBezel Scale: 12 HourSubmersibility: 10 ATMCase Diameter: 41mmCase Thickness: 11mmLug Width: 20mmDiscover the world of Acotis Diamonds, where exceptional craftsmanship and timeless elegance come together to create jewellery designed to be treasured for a lifetime. Every piece in our collection is thoughtfully curated and masterfully finished, reflecting our commitment to quality, artistry, and enduring style. From radiant diamonds to lustrous precious metals and contemporary designer creations, Acotis Diamonds offers jewellery that celebrates individuality, sophistication, and the beauty of fine detail. Our range is crafted using only the finest materials, ensuring every item meets the highest standards of brilliance and durability. Whether it’s the sparkle of meticulously cut diamonds, the rich sheen of gold and sterling silver, or the vibrant hues of carefully selected gemstones, each piece is chosen to deliver exceptional clarity and lasting allure. We partner with leading jewellery designers and trusted global brands to bring you collections that blend modern aesthetics with classic inspirations, offering something to suit every personality and occasion.At Acotis Diamonds, we believe jewellery should be as meaningful as it is beautiful. That’s why we focus on craftsmanship that captures life’s most precious moments—whether it’s a gift to mark a milestone, a token of affection, or a personal investment in everyday luxury. Our designers pay close attention to every curve, facet, and setting, ensuring unmatched comfort, balance, and visual appeal. Each piece undergoes rigorous quality checks, so you can feel confident that your jewellery is made to endure, shine, and be cherished for years to come. From elegant bracelets and necklaces to statement earrings, refined rings, and collectible charms, our diverse range allows you to express your style with effortless sophistication. Whether you prefer understated minimalism, bold contemporary design, or timeless traditional beauty, Acotis Diamonds provides jewellery that enhances every moment with subtle glamour and refined detail. Experience the artistry of fine jewellery with Acotis Diamonds—where superior craftsmanship, exceptional quality, and thoughtful design come together to create pieces that truly shine.