{"product_id":"anchorflex™-end-link-for-seiko-prospex-spb453-spb451-spb455-navy-blue","title":"AnchorFlex™ End-Link for Seiko Prospex SPB453 \/ SPB451 \/ SPB455 - Navy Blue","description":"\u003ch2\u003e\u003cstrong\u003eAnchorFlex™ End-Link for Seiko Prospex SPB453 \/ SPB451 \/ SPB455\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eMachined to the case. Built to stay.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eBuilt for the Integrated Look\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eSeiko's 1965 Heritage Diver was designed around its bracelet. Put it on a straight-end strap and you see it immediately — daylight between the lugs, a break in the line where the case should carry through.\u003c\/p\u003e\n\u003cp\u003eAnchorFlex closes that gap. Machined end-links curve into the SPB45-series case and pick up exactly where the lugs leave off, delivering the integrated profile of the factory bracelet with the comfort of FKM. No shims, no gap, no compromise.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e✔ Seiko Prospex SPB453, SPB451, SPB455\u003c\/p\u003e\n\u003cp\u003e✔ JDM equivalents: SBDC197, SBDC195, SBDC199\u003c\/p\u003e\n\u003cp\u003e✔ Includes machined end-links and Premium 1.8mm spring bars\u003c\/p\u003e\n\u003cp\u003e✘ Not compatible with the previous-generation SPB143 \/ SPB147 \/ SPB149\u003c\/p\u003e\n\u003cp\u003e✘ Not compatible with King Seiko SPB457 \/ SPB459 \/ SPB461\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eBoth generations get called the \"62MAS\" — check your reference number before ordering. This end-link is cut for the 2024-onward case only.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eSized for Seiko's Hardware\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eProspex divers run oversized lug holes and thicker-than-standard spring bars, which is why so many aftermarket straps sit loose or won't seat at all. Every AnchorFlex fitment for this watch ships with our Premium 1.8mm spring bars, machined to Seiko's actual tolerances rather than a generic 20mm assumption.\u003c\/p\u003e\n\u003cp\u003eCorrect at the lug. Correct at the bar. No play.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eAnchorFLEX™ FKM Fluoroelastomer\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eOur signature FKM compound isn't an afterthought—it's the foundation. Purpose-built for daily wear, it resists UV exposure, heat, and chemicals without hardening, fading, or losing its form. The result is a strap that feels broken-in from day one and stays that way.\u003c\/p\u003e\n\u003cp\u003eSoft where it counts. Structured where it matters.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAnchorFLEX™ FKM Fluoroelastomer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd-links\u003c\/td\u003e\n\u003ctd\u003eMachined, fitted — included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware\u003c\/td\u003e\n\u003ctd\u003e316L Stainless Steel Buckle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring bars\u003c\/td\u003e\n\u003ctd\u003ePremium 1.8mm — included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLug width\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProfile\u003c\/td\u003e\n\u003ctd\u003eSlim, tapered, all-day wear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eThe bottom line:\u003c\/strong\u003e the SPB453 looks its best when the strap finishes the case instead of interrupting it. This is the shortest path to that, straight out of the box.\u003c\/p\u003e","brand":"Anchor Strap Co.","offers":[{"title":"Default Title","offer_id":46404186144904,"sku":null,"price":99.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/3580\/2760\/files\/SPB451Final.jpg?v=1786733697","url":"https:\/\/anchorstrapco.com\/products\/anchorflex%e2%84%a2-end-link-for-seiko-prospex-spb453-spb451-spb455-navy-blue","provider":"Anchor Strap Co.","version":"1.0","type":"link"}