{"product_id":"seiko-1976-6139-7100-helmet","title":"Seiko - 1976 Chronograph Automatic 6139-7100 \"Helmet\"","description":"\u003cp\u003eWHAT WE LOVE:\u003c\/p\u003e\n\u003cp\u003eThe Seiko 6139-7100 has two nicknames, both earned. The \"Helmet\" describes the case — a conical, angular form with a dramatically bevelled crystal and a bezel that overhangs the case sides, creating the profile of a racing or motorcycle helmet from certain angles.\u003c\/p\u003e\n\u003cp\u003eThe dial layout is immediately recognisable: a single sub-register at 6 o'clock (running seconds and chronograph minute counter on the same disc, one gold pointer and one teal marker), a yellow chronograph sweep hand visible across the dial, a steeply set tachymeter chapter ring at the outer edge, and the day\/date at 3 o'clock with its characteristic 1970s typography. The original bracelet is included — the angular, linked steel bracelet that is specific to this generation of Seiko chronograph and impossible to replicate.\u003c\/p\u003e\n\u003cp\u003eWHAT'S INSIDE:\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eThe 6139-7100 is powered by Seiko Calibre 6139B — a 17-jewel automatic chronograph with column wheel and vertical clutch, beating at 21,600 vibrations per hour with automatic winding (non-hand-wind). The single sub-register at 6 o'clock provides both running seconds and 30-minute elapsed time on a single disc with two differently coloured pointers. \u003cmeta charset=\"utf-8\"\u003eFully serviced, new gaskets — July 2026.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003eFIVEFORTYFIVE SIX MONTHS \u003c\/span\u003e\u003cspan class=\"s2\" style=\"color: rgb(255, 42, 0);\"\u003eWARRANTY\u003c\/span\u003e\u003c\/p\u003e","brand":"Seiko","offers":[{"title":"Default Title","offer_id":53502657102097,"sku":"24399","price":1350.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0072\/5332\/7960\/files\/Seiko-1976-6139-7100-Helmet243991-7.jpg?v=1788386240","url":"https:\/\/fivefortyfive.nz\/products\/seiko-1976-6139-7100-helmet","provider":"FiveFortyFive","version":"1.0","type":"link"}