{"product_id":"montre-seiko-presage-coeur-ouvert-homme-automatique-ssa423j1-blanc-style-60s","title":"Seiko Presage Open Heart Men's Automatic Watch SSA423J1 White 60s Style","description":"\u003ch2\u003ePresage Open Heart SSA423J1: The Exposed Balance Wheel, 40.5 mm, Caliber 4R39\u003c\/h2\u003e\u003ch3\u003eCollection\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eSeiko SSA423J1\u003c\/strong\u003e is part of the \u003cstrong\u003ePresage\u003c\/strong\u003e collection with an open heart complication. The circular cut-out on the dial reveals the balance wheel and a portion of the gear train, allowing the movement to be observed in operation. Caliber 4R39 with 41 hours power reserve, 40.5 mm case.\u003c\/p\u003e\u003ch3\u003eCase\u003c\/h3\u003e\u003cp\u003eThe case of the \u003cstrong\u003eSeiko SSA423J1\u003c\/strong\u003e is made of \u003cstrong\u003estainless steel\u003c\/strong\u003e, with a diameter of \u003cstrong\u003e40.5 mm\u003c\/strong\u003e and a thickness of \u003cstrong\u003e12.5 mm\u003c\/strong\u003e. The bezel is fixed. The white dial is protected by a \u003cstrong\u003esapphire crystal\u003c\/strong\u003e, the most scratch-resistant, with an anti-reflective coating. The case back is \u003cstrong\u003eexhibition (transparent)\u003c\/strong\u003e, allowing the movement to be observed in operation. \u003cstrong\u003eWater resistance is 50 m\u003c\/strong\u003e, suitable for swimming and splashing.\u003c\/p\u003e\u003ch3\u003eMovement\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eSeiko SSA423J1\u003c\/strong\u003e is powered by the \u003cstrong\u003eautomatic caliber 4R39\u003c\/strong\u003e, offering a \u003cstrong\u003epower reserve of approximately 41 hours\u003c\/strong\u003e. It incorporates \u003cstrong\u003ehacking\u003c\/strong\u003e (stop-seconds for precise time setting) and \u003cstrong\u003emanual winding\u003c\/strong\u003e, two conveniences absent on the previous generation 7S26 caliber. The dial opening reveals the balance wheel and a portion of the gear train, making the mechanics directly observable on the wrist.\u003c\/p\u003e\u003ch3\u003eBracelet\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eSeiko SSA423J1\u003c\/strong\u003e is equipped with a \u003cstrong\u003estainless steel bracelet\u003c\/strong\u003e, both robust and easy to maintain, closed by a \u003cstrong\u003efolding clasp\u003c\/strong\u003e, which makes it easy to put on and take off the watch by securing the bracelet to the wrist. The lug width is \u003cstrong\u003e20 mm\u003c\/strong\u003e.\u003c\/p\u003e","brand":"SEIKO","offers":[{"title":"Default Title","offer_id":52488835170646,"sku":"SEI597","price":490.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/0818\/6710\/files\/MONTRE-SEIKO-SSA423J1.jpg?v=1773065312","url":"https:\/\/psbwatches.com\/en\/products\/montre-seiko-presage-coeur-ouvert-homme-automatique-ssa423j1-blanc-style-60s","provider":"PSB WATCHES","version":"1.0","type":"link"}