{"title":"Seiko 4M21 Parts","description":"\u003ch2\u003eGenuine Seiko 4M21 Parts\u003c\/h2\u003e\n\u003cp\u003eOriginal Seiko replacement parts for watches with calibre 4M21.\u003c\/p\u003e\n\u003ch3\u003eFind the right part\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCheck the case number on the back of your watch and search for it in our shop.\u003c\/li\u003e\n\u003cli\u003eNot sure where to look? Read \u003ca href=\"\/pages\/how-to-find-the-model-or-case-number-of-your-watch\"\u003ehow to find the model or case number of your watch\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eEvery product page lists the case numbers and calibres the part is made for.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBrowse by part type\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"\/collections\/dials\"\u003eDials\u003c\/a\u003e · \u003ca href=\"\/collections\/hands\"\u003eHands\u003c\/a\u003e · \u003ca href=\"\/collections\/seiko-crystals\"\u003eCrystals\u003c\/a\u003e · \u003ca href=\"\/collections\/bezels\"\u003eBezels\u003c\/a\u003e · \u003ca href=\"\/collections\/gaskets-o-rings\"\u003eGaskets\u003c\/a\u003e · \u003ca href=\"\/collections\/movement-parts\"\u003eMovement parts\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eSee the full \u003ca href=\"\/collections\/seiko-parts\"\u003eSeiko parts catalogue\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"seiko-270a02sn01-sapphire-crystal-2f50-0700","title":"SEIKO 270A02SN01 Sapphire Crystal 2F50-0700","description":"\u003cp\u003eThis is the original replacement Sapphire Crystal for the SEIKO 2F50-0700 \u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich SEIKO watches is this Sapphire Crystal compatible with?\u003c\/strong\u003e (\u003cem\u003esee the table below for the complete list of compatible model and case codes \/ numbers\u003c\/em\u003e)\u003c\/p\u003e\u003cp\u003eThis watch Sapphire Crystal is compatible with the following \u003ca href=\"\/pages\/model-calibre-parts-list\" rel=\"noopener\" target=\"_blank\"\u003emodels\u003c\/a\u003e:\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e2F50-0700, 4M21-0B10, 5A54-2A00, 5A74-2B90, 5A74-2D40, 5E20-7020, 5E31-6D60, 5E61-0A20, 5E61-0A60, 5E61-0A70, 6810-6020, 8J80-6040, 8J80-6A30, 8J80-6A90, 8J81-0AA0, 8J81-0AB0,\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich SEIKO case numbers is this Sapphire Crystal compatible with?\u003c\/strong\u003e (\u003cem\u003esee the table below for the complete list of compatible model and case codes \/ numbers\u003c\/em\u003e)\u003c\/p\u003e\u003cp\u003eThis Sapphire Crystal is compatible with the following \u003ca href=\"\/pages\/how-to-find-the-model-or-case-number-of-your-watch\" rel=\"noopener\" target=\"_blank\"\u003ecase numbers\u003c\/a\u003e:\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e2F50-0700, 4M21-0B10, 5A54-2A00, 5A74-2B90, 5A74-2D40, 5E20-7020, 5E31-6D60, 5E61-0A20, 5E61-0A60, 5E61-0A70, 6810-6020, 8J80-6040, 8J80-6A30, 8J80-6A90, 8J81-0AA0, 8J81-0AB0,\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003ctable style=\"width: 94.7273%;\" width=\"154\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 60.0608%;\"\u003e\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 39.6592%;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSEIKO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArticle number\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e270A02SN01\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e27,0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eSapphire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eTransparent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrystal Coating Type\u003c\/td\u003e\n\u003ctd\u003eUncoated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrystal Fitting Type\u003c\/td\u003e\n\u003ctd\u003eBonded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003e100% genuine, brand-new watch part, directly manufactured by Seiko. These are not aftermarket or refurbished components but original factory parts, ensuring a perfect fit and the highest quality\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cem\u003eFor the latest product FAQs, please scroll down to the bottom of this product page.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e","brand":"Seiko","offers":[{"title":"Default Title","offer_id":53490460229969,"sku":"270A02SN01","price":94.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/3531\/7585\/files\/SEIKO-GENUINE-WATCH-CRYSTAL-GLASS-OEM-ORIGINAL_8c95b312-0095-4d9a-8b5a-dd99c6b5fe71.png?v=1775837862"},{"product_id":"seiko-270a20sb0d-sapphire-crystal-sacs034-4m21-0b70","title":"SEIKO 270A20SB0D Sapphire Crystal SACS034 - 4M21-0B70","description":"\u003cp\u003eThis is the original replacement Sapphire Crystal for the SEIKO SACS034 - 4M21-0B70 \u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich SEIKO watches is this Sapphire Crystal compatible with?\u003c\/strong\u003e (\u003cem\u003esee the table below for the complete list of compatible model and case codes \/ numbers\u003c\/em\u003e)\u003c\/p\u003e\u003cp\u003eThis watch Sapphire Crystal is compatible with the following \u003ca href=\"\/pages\/model-calibre-parts-list\" rel=\"noopener\" target=\"_blank\"\u003emodels\u003c\/a\u003e:\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eSACS034, SACS0341, SACS035, SACS0351,\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich SEIKO case numbers is this Sapphire Crystal compatible with?\u003c\/strong\u003e (\u003cem\u003esee the table below for the complete list of compatible model and case codes \/ numbers\u003c\/em\u003e)\u003c\/p\u003e\u003cp\u003eThis Sapphire Crystal is compatible with the following \u003ca href=\"\/pages\/how-to-find-the-model-or-case-number-of-your-watch\" rel=\"noopener\" target=\"_blank\"\u003ecase numbers\u003c\/a\u003e:\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e4M21-0B70, 4M21-0B80,\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003ctable style=\"width: 94.7273%;\" width=\"154\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 60.0608%;\"\u003e\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 39.6592%;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSEIKO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArticle number\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e270A20SB0D\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e27,0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eSapphire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eTransparent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrystal Coating Type\u003c\/td\u003e\n\u003ctd\u003eAnti-reflective coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrystal Fitting Type\u003c\/td\u003e\n\u003ctd\u003eBonded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003e100% genuine, brand-new watch part, directly manufactured by Seiko. These are not aftermarket or refurbished components but original factory parts, ensuring a perfect fit and the highest quality\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cem\u003eFor the latest product FAQs, please scroll down to the bottom of this product page.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e","brand":"Seiko","offers":[{"title":"Default Title","offer_id":53490461933905,"sku":"270A20SB0D","price":70.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/3531\/7585\/files\/SEIKO-GENUINE-WATCH-CRYSTAL-GLASS-OEM-ORIGINAL_7ea473a0-571d-43bd-a998-22bd92531993.png?v=1775837892"},{"product_id":"seiko-270wa4sk01-sapphire-crystal-sacs009-4m21-0a10","title":"SEIKO 270WA4SK01 Sapphire Crystal SACS009 - 4M21-0A10","description":"\u003cp\u003eThis is the original replacement Sapphire Crystal for the SEIKO SACS009 - 4M21-0A10 \u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich SEIKO watches is this Sapphire Crystal compatible with?\u003c\/strong\u003e (\u003cem\u003esee the table below for the complete list of compatible model and case codes \/ numbers\u003c\/em\u003e)\u003c\/p\u003e\u003cp\u003eThis watch Sapphire Crystal is compatible with the following \u003ca href=\"\/pages\/model-calibre-parts-list\" rel=\"noopener\" target=\"_blank\"\u003emodels\u003c\/a\u003e:\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eSACS009, SACS0091, SACS00E, SACS00E1, SACS012, SACS0121, SACS011, SACS0111, SACS013, SACS0131, SACS005, SACS0051, SACS007, SACS0071, LJAN601, SADX047, SADX0471, SADV006, SADV0061, SADV006J, SADV008, SADV0081, SADV008J, SADV00M, SADV00M1, SADV027, SADV0271, SATM001, SATM0011, SATM003, SATM0031, SCEM003, SCEM0031, SCEM001, SCEM0011, SBKW002J, SBKW001, SBKW002, SBKW0011, SCEN001, SCEN0011, SCEN003, SCEN0031,\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich SEIKO case numbers is this Sapphire Crystal compatible with?\u003c\/strong\u003e (\u003cem\u003esee the table below for the complete list of compatible model and case codes \/ numbers\u003c\/em\u003e)\u003c\/p\u003e\u003cp\u003eThis Sapphire Crystal is compatible with the following \u003ca href=\"\/pages\/how-to-find-the-model-or-case-number-of-your-watch\" rel=\"noopener\" target=\"_blank\"\u003ecase numbers\u003c\/a\u003e:\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e4M21-0A10, 4M21-0A20, 4M21-0A50, 4M21-0A60, 5E31-6E70, 5E61-0A10, 5E61-0A40, 5H23-6B90, 5H23-6C00, 5T52-7A00, 5T52-7A01, 5T52-7A0A, 7N93-6A10,\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003ctable style=\"width: 94.7273%;\" width=\"154\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 60.0608%;\"\u003e\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 39.6592%;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSEIKO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArticle number\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e270WA4SK01\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e27,0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eSapphire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eTransparent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrystal Coating Type\u003c\/td\u003e\n\u003ctd\u003eCurved edge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrystal Fitting Type\u003c\/td\u003e\n\u003ctd\u003eWaterproof gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003e100% genuine, brand-new watch part, directly manufactured by Seiko. These are not aftermarket or refurbished components but original factory parts, ensuring a perfect fit and the highest quality\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cem\u003eFor the latest product FAQs, please scroll down to the bottom of this product page.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e","brand":"Seiko","offers":[{"title":"Default Title","offer_id":53490506269009,"sku":"270WA4SK01","price":104.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/3531\/7585\/files\/SEIKO-GENUINE-WATCH-CRYSTAL-GLASS-OEM-ORIGINAL_613606f5-cc42-4197-9553-ce1512ffbab5.png?v=1775838342"},{"product_id":"seiko-270wb6sn01-sapphire-crystal-scdg001-4m21-0b50","title":"SEIKO 270WB6SN01 Sapphire Crystal SCDG001 - 4M21-0B50","description":"\u003cp\u003eThis is the original replacement Sapphire Crystal for the SEIKO SCDG001 - 4M21-0B50 \u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich SEIKO watches is this Sapphire Crystal compatible with?\u003c\/strong\u003e (\u003cem\u003esee the table below for the complete list of compatible model and case codes \/ numbers\u003c\/em\u003e)\u003c\/p\u003e\u003cp\u003eThis watch Sapphire Crystal is compatible with the following \u003ca href=\"\/pages\/model-calibre-parts-list\" rel=\"noopener\" target=\"_blank\"\u003emodels\u003c\/a\u003e:\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eSCDG001, SCDG0011, SCDG005, SCDG0051,\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich SEIKO case numbers is this Sapphire Crystal compatible with?\u003c\/strong\u003e (\u003cem\u003esee the table below for the complete list of compatible model and case codes \/ numbers\u003c\/em\u003e)\u003c\/p\u003e\u003cp\u003eThis Sapphire Crystal is compatible with the following \u003ca href=\"\/pages\/how-to-find-the-model-or-case-number-of-your-watch\" rel=\"noopener\" target=\"_blank\"\u003ecase numbers\u003c\/a\u003e:\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e4M21-0B50,\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003ctable style=\"width: 94.7273%;\" width=\"154\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 60.0608%;\"\u003e\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 39.6592%;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSEIKO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArticle number\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e270WB6SN01\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e27,0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eSapphire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eTransparent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrystal Coating Type\u003c\/td\u003e\n\u003ctd\u003eUncoated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrystal Fitting Type\u003c\/td\u003e\n\u003ctd\u003eWaterproof gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003e100% genuine, brand-new watch part, directly manufactured by Seiko. These are not aftermarket or refurbished components but original factory parts, ensuring a perfect fit and the highest quality\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cem\u003eFor the latest product FAQs, please scroll down to the bottom of this product page.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e","brand":"Seiko","offers":[{"title":"Default Title","offer_id":53490508562769,"sku":"270WB6SN01","price":70.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/3531\/7585\/files\/SEIKO-GENUINE-WATCH-CRYSTAL-GLASS-OEM-ORIGINAL_5f957e25-2ce7-46e6-af35-3b5afee25fa8.png?v=1775838356"}],"url":"https:\/\/watchplaza.co.uk\/collections\/seiko-4m21-parts.oembed","provider":"WatchPlaza","version":"1.0","type":"link"}