{"product_id":"seiko-5-actus-square-ref-6306-5000","title":"Seiko 5 Actus “Square” Ref. 6306-5000","description":"\u003cp\u003eSeiko 5 Actus “Square” Ref. 6306-5000 (JDM)\u003cbr\u003eIntroduced exclusively to the Japanese domestic market (JDM) in the second half of the 1970s, the Seiko 5 Actus series is a refinement of the concept of reliable automatic watches for young professionals. This series combines the “5” tradition—durability, self-winding, a day-date display, water resistance, and a robust case—with a modern urban aesthetic.\u003c\/p\u003e\n\u003cp\u003eThe Ref. 6306-5000 distinguishes itself with its characteristically square case. This design, with its sharp lines and brushed surface, is a typical reflection of Seiko’s industrial modernism period of the 1970s. The dial features a microwave texture, a design Seiko applied only to select Actus models during that period. This texture creates matte and glossy transitions under different light angles, enhancing the optical contrast of the simple indices and black-lined hands.\u003cbr\u003eThe bilingual (Japanese\/English) day and date window on the right side of the dial is a unique detail found only on domestic market calibers from this period.\u003c\/p\u003e\n\u003cp\u003eTechnical Specifications\u003cbr\u003eRef: 6306-5000\u003cbr\u003eProduction: October 1976 (Serial No: 608646)\u003cbr\u003eCaliber: Seiko 6306A – Automatic, 21 jewels, hack (stop-seconds) function, double-toned day-date\u003cbr\u003eCase: Stainless steel, brushed finish – square\/rectangular\u003cbr\u003eThickness: 11.7 mm\u003cbr\u003eGlass: Raised square acrylic (original)\u003cbr\u003eDial: Silver-tone, microwave-textured, baton indices, black-lined hand set\u003cbr\u003eDay\/Date: Internally framed window at 3 o'clock\u003cbr\u003eBracelet: Original Seiko Actus stainless steel bracelet, logo clasp\u003cbr\u003eAdditional Hardware: Leather strap set + carrying case\u003c\/p\u003e\n\u003cp\u003eCondition Report\u003cbr\u003eThe dial, indices, and hand set are original; the surface texture is uniform and vibrant.\u003cbr\u003eThe case maintains its general lines, and the brushing is evident.\u003cbr\u003eThe crystal is clean; There is no distortion of the edge phases.\u003cbr\u003eThe movement functions smoothly, and the day-date transitions are smooth.\u003cbr\u003eThe bracelet and clasp system are robust, and the logos are clearly legible.\u003c\/p\u003e\n\u003cp\u003eEvaluation\u003cbr\u003eThis square-cased Seiko 5 Actus is one of Seiko's distinctive mid-1970s designs, a period that combined formal language with mechanical craftsmanship. The dial texture bears one of the most distinctive surface treatments in Seiko's JDM collection.\u003cbr\u003eIt reflects the maturity of the brand's \"automatic era\" both technically and aesthetically.\u003c\/p\u003e\n\u003cp\u003eThe product you are reviewing was manufactured in 1976.\u003c\/p\u003e\n\u003cp\u003eProfessionally overhauled and FULLY SERVICED (the movement is completely disassembled, its components cleaned, oiled, and adjusted), your watch will function flawlessly without any surprises. (It will be maintenance-free for 3 years unless exposed to direct water or high humidity for extended periods.)\u003cbr\u003eProduct Condition: Tested, fully functional, and in working order.\u003c\/p\u003e","brand":"Turgay's Watches","offers":[{"title":"Default Title","offer_id":46967274078429,"sku":"TW00895","price":100.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/3125\/0653\/files\/1_d9bd3a64-8cd3-4be6-a9ae-8cc56dba70c7.jpg?v=1762708559","url":"https:\/\/turgayswatches.com\/products\/seiko-5-actus-square-ref-6306-5000","provider":"Turgay's Watches","version":"1.0","type":"link"}