{"title":"Seamaster Mods","description":"\u003cdiv class=\"rv-collection-intro\"\u003e\u003cp\u003eOur Seamaster-style Seiko mods take the wave-pattern dial and the scalloped dive bezel and build them on a genuine Seiko NH35 automatic. Every one carries a sapphire crystal, 316L marine-grade stainless steel and a 1 year warranty, and is splash-resistant as standard, with a Swim-Ready upgrade you can add at order time. Made to order, with free worldwide shipping. Made to be looked at twice.\u003c\/p\u003e\u003c\/div\u003e\u003cp\u003eThe dive watch that learned to dress up. The \u003cstrong\u003eSeiko Seamaster mod\u003c\/strong\u003e keeps the wave-textured dial, the applied indices and the sword hands, on a movement you can service anywhere.\u003c\/p\u003e\u003cp\u003eFive builds: Black, Midnight Black, Blue, White, and one on a black silicone strap if you want the lighter wear.\u003c\/p\u003e\u003cdiv class=\"rv-related-guides\"\u003e\n\u003ch3\u003eGuides for this collection\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/submariner-homage-watches-what-to-look-for-in\"\u003eDive homage buyer's guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/seiko-mod-water-resistance-can-you-actually-dive\"\u003eCan you dive with a Seiko mod?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/nh35-vs-nh36-vs-miyota-which-automatic-movement\"\u003eNH35 vs NH36 vs Miyota\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/sapphire-vs-mineral-crystal-why-it-matters-on\"\u003eSapphire vs mineral crystal\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/homage-vs-replica-vs-fake-what-a-seiko\"\u003eHomage vs replica vs fake\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"rv-collection-faq\"\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eIs a Seamaster mod a real automatic?\u003c\/h3\u003e\n\u003cp\u003eYes. Each one runs a genuine Seiko NH35 automatic: 21,600 beats per hour, hacking seconds, hand-winding and around a 41 hour power reserve.\u003c\/p\u003e\n\u003ch3\u003eWhat is the wave dial made of?\u003c\/h3\u003e\n\u003cp\u003eThe wave pattern is stamped into the dial itself, so it catches light as you turn your wrist rather than being printed flat.\u003c\/p\u003e\n\u003ch3\u003eCan I swim or dive with it?\u003c\/h3\u003e\n\u003cp\u003eNot as standard. Standard builds are splash-resistant: fine for rain, hand-washing and everyday wear, but not for swimming, showering or diving. To swim with it, add the Swim-Ready 5 ATM upgrade when you order, and screw the crown down before any water.\u003c\/p\u003e\n\u003ch3\u003eIs this an original watch?\u003c\/h3\u003e\n\u003cp\u003eYes. It is an original Rosevari build: a genuine Japanese automatic movement in a case and dial style that pays homage to a classic. It is sold openly as a Rosevari custom build, never as the genuine article, and every part is named.\u003c\/p\u003e\n\u003ch3\u003eWhat does it cost and how long does it take?\u003c\/h3\u003e\n\u003cp\u003ePrices show in your currency on each watch. Every build is made to order, in 2 to 4 weeks from order to dispatch, with free worldwide shipping and a 1-year warranty.\u003c\/p\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is a Seamaster mod a real automatic?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Each one runs a genuine Seiko NH35 automatic: 21,600 beats per hour, hacking seconds, hand-winding and around a 41 hour power reserve.\"}}, {\"@type\": \"Question\", \"name\": \"What is the wave dial made of?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The wave pattern is stamped into the dial itself, so it catches light as you turn your wrist rather than being printed flat.\"}}, {\"@type\": \"Question\", \"name\": \"Can I swim or dive with it?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Not as standard. Standard builds are splash-resistant: fine for rain, hand-washing and everyday wear, but not for swimming, showering or diving. To swim with it, add the Swim-Ready 5 ATM upgrade when you order, and screw the crown down before any water.\"}}, {\"@type\": \"Question\", \"name\": \"Is this an original watch?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. It is an original Rosevari build: a genuine Japanese automatic movement in a case and dial style that pays homage to a classic. It is sold openly as a Rosevari custom build, never as the genuine article, and every part is named.\"}}, {\"@type\": \"Question\", \"name\": \"What does it cost and how long does it take?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Prices show in your currency on each watch. Every build is made to order, in 2 to 4 weeks from order to dispatch, with free worldwide shipping and a 1-year warranty.\"}}]}\u003c\/script\u003e","products":[{"product_id":"seiksea-black-silicone","title":"Seamaster (Black Silicone) | NH35 Custom Mod Watch","description":"\u003cp\u003eThe dive shape, stripped back.\u003c\/p\u003e\n\n\u003cp\u003eA black dial, a rotating bezel in the dive style, and a black rubber strap. No two tone, no colour, nothing on it to date the design.\u003c\/p\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMovement\u003c\/td\u003e\n\u003ctd\u003eSeiko NH35 automatic, 21,600 bph, approx. 41-hour power reserve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDial\u003c\/td\u003e\n\u003ctd\u003eBlack, date window\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBezel\u003c\/td\u003e\n\u003ctd\u003eRotating, dive style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStrap\u003c\/td\u003e\n\u003ctd\u003eBlack rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrystal\u003c\/td\u003e\n\u003ctd\u003eSapphire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater resistance\u003c\/td\u003e\n\u003ctd\u003eEveryday wear (splash-resistant, not dive-rated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eNo battery, ever. It winds off the motion of your arm, and any watchmaker on earth can service it.\u003c\/p\u003e\n\n\u003cp\u003eThe watch this design echoes sells for more than twenty times this price, and a routine service on it costs more than this entire watch.\u003c\/p\u003e\n\n\u003cp\u003eSomeone will ask. Here is your answer. It is a homage. The movement is named in the specs above. You paid for the watch, not the name.\u003c\/p\u003e\n\n\u003cp\u003eSay it exactly like that. There is no apology in it, because none is owed.\u003c\/p\u003e\n\n\u003cp\u003eOrder yours and start your build. You will get photos of your finished watch before it ships. Then you will get the watch.\u003c\/p\u003e","brand":"Rosevari Watches","offers":[{"title":"Standard","offer_id":44697977520194,"sku":"RV-SEA-BLACKSILICON","price":359.0,"currency_code":"AUD","in_stock":true},{"title":"Swim-Ready (5 ATM)","offer_id":45211731034178,"sku":"RV-SEA-BLACKSILICON-5ATM","price":388.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/5107\/4882\/files\/seiksea-black-silicone_dda56270-92d3-4456-9939-d26d5e077c3d.png?v=1790068518"},{"product_id":"seiksea-blue","title":"Seamaster (Blue) | NH35 Custom Mod Watch","description":"\u003cp\u003e\u003cstrong\u003eThe ocean-ready classic, in the colour of the water it takes after.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe texture is the point here. Light moves across the blue dial the way it moves across water, breaking and reforming as your wrist turns, so the face reads differently at your desk than it does outside at noon.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMovement:\u003c\/strong\u003e Seiko NH35 automatic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase:\u003c\/strong\u003e ~41.5mm stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrystal:\u003c\/strong\u003e Sapphire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDial \u0026amp; bezel:\u003c\/strong\u003e Blue textured dial, rotating dive bezel, stainless steel case and bracelet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrap:\u003c\/strong\u003e Steel bracelet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater resistance:\u003c\/strong\u003e Everyday wear (splash-resistant, not dive-rated)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eA genuine Seiko NH35 automatic runs the show: 41 hours of power reserve, hacking seconds for precise setting, hand-winding when it has sat a while, and a 21,600 beat rate proven across the entire mod community.\u003c\/p\u003e\n\n\u003cp\u003eBefore it ships, I photograph your watch and send it to you. Not a stock photo of the model. The actual one going in your box.\u003c\/p\u003e\n\n\u003cp\u003eAdd it to your cart and I will get it started.\u003c\/p\u003e","brand":"Rosevari Watches","offers":[{"title":"Standard","offer_id":44697980731458,"sku":"RV-SEA-BLUE","price":359.0,"currency_code":"AUD","in_stock":true},{"title":"Swim-Ready (5 ATM)","offer_id":45211735162946,"sku":"RV-SEA-BLUE-5ATM","price":388.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/5107\/4882\/files\/seiksea-blue_f0e3eda3-4c59-416e-9c06-4c79c9431c1c.png?v=1790069599"},{"product_id":"seiksea-white","title":"Seamaster (White) | NH35 Custom Mod Watch","description":"\u003cp\u003e\u003cstrong\u003eThe ocean-ready classic, flipped to bright white.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eMost dive-shaped watches hide in dark colours. This one does the opposite. The white dial throws light back at you, and its texture gives the surface real depth, so it reads crisp rather than blank from any angle.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMovement:\u003c\/strong\u003e Seiko NH35 automatic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase:\u003c\/strong\u003e ~41.5mm stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrystal:\u003c\/strong\u003e Sapphire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDial \u0026amp; bezel:\u003c\/strong\u003e White textured dial, rotating dive bezel, stainless steel case and bracelet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrap:\u003c\/strong\u003e Milanese mesh bracelet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater resistance:\u003c\/strong\u003e Everyday wear (splash-resistant, not dive-rated)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eBehind the white dial is a genuine Seiko NH35 automatic, trusted across countless mods because it runs for years between services.\u003c\/p\u003e\n\n\u003cp\u003eBefore it ships, I photograph your watch and send it to you. Not a stock photo of the model. The actual one going in your box.\u003c\/p\u003e\n\n\u003cp\u003eAdd it to your cart and I will get it started.\u003c\/p\u003e","brand":"Rosevari Watches","offers":[{"title":"Standard","offer_id":44697981517890,"sku":"RV-SEA-WHITE","price":359.0,"currency_code":"AUD","in_stock":true},{"title":"Swim-Ready (5 ATM)","offer_id":45211735556162,"sku":"RV-SEA-WHITE-5ATM","price":388.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/5107\/4882\/files\/seiksea-white_d3511f90-d1bf-48c5-bb9b-6b12e8c057ff.png?v=1790069417"},{"product_id":"seiksea-007","title":"Seamaster (Midnight Black) | NH35 Custom Mod Watch","description":"\u003cp\u003e\u003cstrong\u003eThe ocean-ready classic at its darkest, on woven steel.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eMidnight black is the after-dark spec. The dial goes deep, the bezel rings it in the same dark register, and the Milanese mesh bracelet drapes across the wrist like fabric rather than links.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMovement:\u003c\/strong\u003e Seiko NH35 automatic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase:\u003c\/strong\u003e ~41.5mm stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrystal:\u003c\/strong\u003e Sapphire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDial \u0026amp; bezel:\u003c\/strong\u003e Black dial, rotating dive bezel, stainless steel case and bracelet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrap:\u003c\/strong\u003e Milanese mesh bracelet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater resistance:\u003c\/strong\u003e Everyday wear (splash-resistant, not dive-rated)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eUnder the black dial beats a genuine Seiko NH35 automatic. Stop the seconds to set it, wind it from the crown when it suits you, and let 21,600 beats per hour and a 41-hour reserve do the rest for years.\u003c\/p\u003e\n\n\u003cp\u003eBefore it ships, I photograph your watch and send it to you. Not a stock photo of the model. The actual one going in your box.\u003c\/p\u003e\n\n\u003cp\u003eAdd it to your cart and I will get it started.\u003c\/p\u003e","brand":"Rosevari Watches","offers":[{"title":"Standard","offer_id":44697983615042,"sku":"RV-SEA-007","price":359.0,"currency_code":"AUD","in_stock":true},{"title":"Swim-Ready (5 ATM)","offer_id":45211736178754,"sku":"RV-SEA-007-5ATM","price":388.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/5107\/4882\/files\/seiksea-007_5ba1aef6-bd9b-46f4-b9f2-e232bf3615a5.png?v=1790069804"},{"product_id":"seiksea-black","title":"Seamaster (Black) | NH35 Custom Mod Watch","description":"\u003cp\u003e\u003cstrong\u003eThe ocean-ready classic, kept simple in black.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you only wear one watch, this is the shape and this is the colour. A black dial reads instantly in any light, the dive bezel gives the case its purposeful shoulders, and the Milanese mesh softens the whole thing so it never feels like gear.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMovement:\u003c\/strong\u003e Seiko NH35 automatic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase:\u003c\/strong\u003e ~41.5mm stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrystal:\u003c\/strong\u003e Sapphire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDial \u0026amp; bezel:\u003c\/strong\u003e Black dial, rotating dive bezel, stainless steel case and bracelet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrap:\u003c\/strong\u003e Milanese mesh bracelet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater resistance:\u003c\/strong\u003e Everyday wear (splash-resistant, not dive-rated)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe engine is a genuine Seiko NH35 automatic, chosen because it refuses to be precious: hackable, hand-windable, 21,600 beats per hour, 41 hours of reserve, and famously cheap to keep healthy for the long haul.\u003c\/p\u003e\n\n\u003cp\u003eBefore it ships, I photograph your watch and send it to you. Not a stock photo of the model. The actual one going in your box.\u003c\/p\u003e\n\n\u003cp\u003eAdd it to your cart and I will get it started.\u003c\/p\u003e","brand":"Rosevari Watches","offers":[{"title":"Standard","offer_id":44697990922306,"sku":"RV-SEA-BLACK","price":359.0,"currency_code":"AUD","in_stock":true},{"title":"Swim-Ready (5 ATM)","offer_id":45211737423938,"sku":"RV-SEA-BLACK-5ATM","price":388.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/5107\/4882\/files\/seiksea-black_e9449224-d3d7-459d-be76-3d160e34a614.png?v=1790069719"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/5107\/4882\/collections\/hiled_12_84b96d1b-ec48-49df-94e0-800a62dcf174.png?v=1787892710","url":"https:\/\/rosevariwatches.com\/collections\/seamaster-mods.oembed","provider":"Rosevari Watches","version":"1.0","type":"link"}