{"product_id":"mwc-w10-1970s-pattern-quartz-watch-with-ronda-515-movement-nato-stock-number-6645-99-541-5317","title":"MWC W10 1970s Pattern Quartz Watch with Ronda 515 Movement - NATO Stock Number 6645-99-541-5317","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSKU Code: W10B\/515\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe MWC \u003cmeta charset=\"utf-8\"\u003eW10B\/515 combines the distinctive appearance of the original hand-wound W10 with the accuracy and convenience of a modern Ronda 515 quartz movement. The watch has a compact satin-finished stainless steel case, black dial and Admiralty Grey NATO strap preserve the character of the original military design.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eA Design Rooted in British Military Watchmaking\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe original hand-wound W10 preceded the quartz G10 watches introduced into British military service in 1980. At the time, plans to incorporate a quartz movement into the W10 case pattern were limited by the thickness of the movements available. A different case design was required, helping shape the G10 watches that followed.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThat lineage continues with the \u003c\/span\u003e\u003ca href=\"https:\/\/mwcwatches.com\/products\/mwc-g10-100m-1000ft-water-resistant-stainless-steel-military-watch-with-sapphire-crystal\"\u003e\u003cspan\u003emodern MWC G10 models supplied to the British Army through military procurement contractors\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe final two images in this listing reproduce a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003egovernment specification sheet dated February 1980\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, inviting tenders for the W10 case pattern. Today’s slimmer quartz movements make it possible to revisit that original concept while retaining its distinctive proportions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRevived for a Military Procurement Requirement\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis model was developed following a request from a military procurement contractor for a substantial quantity of watches based on the original design. NATO codification was a requirement of the project.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFollowing discussions with the MOD codification agency, it was agreed that the watch could use the original \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNATO Stock Number, 6645-99-541-5317\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Apart from the modern movement and the addition of a screw-down locking crown, the watch remains essentially faithful to the specification originally requested. The NSN is engraved on the caseback.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTraditional Character with Quartz Accuracy\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRonda 515 quartz movement is rated at −10 to +20 seconds per month. \u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eThat averages approximately \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e−0.33 to +0.67 seconds per day\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. The battery life is 45 months.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA hacking function stops the seconds hand when setting the time, allowing precise synchronisation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePractical, Understated Construction\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe case is manufactured from \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e316L stainless steel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e with a satin finish. A black dial with luminous markings provides clear readability, while the acrylic crystal retains the traditional appearance of the W10 design.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA screw-down locking crown complements the watch’s \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e50-metre water resistance\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Each watch is supplied with an \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e18mm Admiralty Grey heat-welded NATO webbing strap\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and a presentation tin.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCase diameter:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 35mm excluding crown; 37mm including crown\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eThickness:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 12mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDial:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Black with luminous markings\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCase material:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 316L stainless steel\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCaseback:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 316L stainless steel\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCrown:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 316L stainless steel, screw-down locking\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMovement:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Ronda 515\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBattery Life: \u003c\/strong\u003e45 Months\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAccuracy:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Average ±15 seconds per month at normal temperatures\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFunctions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Hours, minutes, sweep seconds and hacking\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCrystal:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Acrylic (Plexiglass\/Perspex)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eWater resistance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 5 ATM \/ 50m\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eStrap:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 18mm Admiralty Grey heat-welded NATO webbing\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eNATO Stock Number:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 6645-99-541-5317, engraved on the caseback\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePackaging:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supplied in a presentation box\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MWC - Military Watch Company","offers":[{"title":"Default Title","offer_id":63939264282954,"sku":"W10B\/515","price":240.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1140\/1866\/files\/W10_VHB_GS_b.png?v=1793366280","url":"https:\/\/mwc.watch\/products\/mwc-w10-1970s-pattern-quartz-watch-with-ronda-515-movement-nato-stock-number-6645-99-541-5317","provider":"MWC - Military Watch Company","version":"1.0","type":"link"}