{"product_id":"seiko-prospex-alpinist-mechanical-gmt-hbc008j-hbc009j-made-in-japan-wristwatch","title":"Seiko Prospex Alpinist Mechanical GMT HBC008J Blue Made in Japan Wristwatch","description":"\u003cp style=\"text-align: left;\"\u003eThe Seiko Prospex Alpinist Mechanical GMT HBC008J introduces the first-ever GMT complication to the Alpinist line — a Seiko Global Brand Core Shop exclusive built on the DNA of the 1959 Laurel Alpinist, Seiko's first dedicated sport watch. HBC008J's radial-sunray blue dial and matching navy leather strap play up the Alpinist's dressier side while keeping its field-watch roots intact. The 39.5mm case houses the newly developed Caliber 6R54 automatic movement with a 72-hour power reserve, paired with a compass-equipped inner bezel. The red-tipped 24-hour GMT hand and hairline-finished bezel give the second-timezone display genuine field-watch legibility, while the curved sapphire crystal with inner anti-reflective coating and Dia-Shield case coating bring the finish up to premium sports-watch standard. Japan-only, Core Shop distribution-limited model.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003e*Pre-Order! Release scheduled for September 2026.*\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eKey Features:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber 6R54 — Alpinist's First GMT Movement\u003c\/strong\u003e: A newly developed automatic caliber with manual winding capability, 72-hour power reserve, 24 jewels, and a 24-hour GMT hand for true dual-time display — the first time a GMT complication has been built into the Alpinist line.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompass Inner Bezel — Alpinist Field-Watch Heritage\u003c\/strong\u003e: The inner rotating ring doubles as a simplified compass when the GMT hand is used as a 24-hour hand, continuing the mountaineering functionality that has defined Alpinist since the original 1959 Laurel Alpinist.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRadial-Sunray Blue Dial \u0026amp; Navy Leather Strap\u003c\/strong\u003e: The blue dial shifts tone with the light, giving this field watch an unexpectedly dressy presence, paired with a matching navy calfskin leather strap and one-push triple-fold clasp.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDia-Shield Case \u0026amp; Curved Sapphire Crystal\u003c\/strong\u003e: The stainless steel case is finished with Dia-Shield coating for scratch resistance, paired with a curved sapphire crystal featuring inner anti-reflective coating for clean legibility. See-through screw caseback and screw-lock crown complete the tool-watch spec sheet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeiko Global Brand Core Shop Exclusive\u003c\/strong\u003e: Distribution limited to Seiko's designated Core Shops in Japan — not sold through general retail channels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWatch Specifications\u003c\/h2\u003e\n\u003ctable style=\"border-collapse: collapse;\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSeiko Prospex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollection\u003c\/td\u003e\n\u003ctd\u003eAlpinist\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eHBC008J\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMovement\u003c\/td\u003e\n\u003ctd\u003eAutomatic + Manual Winding (Caliber 6R54)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJewels\u003c\/td\u003e\n\u003ctd\u003e24\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Reserve\u003c\/td\u003e\n\u003ctd\u003e~72 hours (fully wound)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+25 \/ -15 sec per day\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Material\u003c\/td\u003e\n\u003ctd\u003eStainless Steel (Dia-Shield Coating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrystal\u003c\/td\u003e\n\u003ctd\u003eCurved Sapphire (Inner Anti-Reflective Coating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Diameter\u003c\/td\u003e\n\u003ctd\u003e39.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Thickness\u003c\/td\u003e\n\u003ctd\u003e13.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLug to Lug\u003c\/td\u003e\n\u003ctd\u003e46.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLug Width\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e87.0g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLume\u003c\/td\u003e\n\u003ctd\u003eLumibrite (Hands \u0026amp; Indices)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBand Material\u003c\/td\u003e\n\u003ctd\u003eGenuine Calfskin Leather (Navy), One-Push Triple-Fold Clasp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Resistance\u003c\/td\u003e\n\u003ctd\u003e200m (20ATM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFeatures\u003c\/td\u003e\n\u003ctd\u003eInner Compass Bezel, Screw-Lock Crown, See-Through Screw Caseback, Antimagnetic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDistribution\u003c\/td\u003e\n\u003ctd\u003eSeiko Global Brand Core Shop Exclusive (Japan only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelease Date\u003c\/td\u003e\n\u003ctd\u003eSeptember 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct File\u003c\/strong\u003e\u003cbr\u003eBrand: \u003ca href=\"https:\/\/thejapanesefactory.com\/collections\/seiko\"\u003eSeiko\u003c\/a\u003e\u003cbr\u003eProduct: \u003ca href=\"https:\/\/thejapanesefactory.com\/collections\/wristwatch\"\u003eWristwatch\u003c\/a\u003e\u003cbr\u003eMovement: \u003ca href=\"https:\/\/thejapanesefactory.com\/collections\/automatic-movement\"\u003eAutomatic\u003c\/a\u003e\u003cbr\u003eDisplay: \u003ca href=\"https:\/\/thejapanesefactory.com\/collections\/analog-display\"\u003eAnalog\u003c\/a\u003e\u003c\/p\u003e","brand":"Seiko","offers":[{"title":"Blue (HBC008J)","offer_id":48235036901606,"sku":null,"price":218800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0702\/8119\/9846\/files\/HBC008J.png?v=1787580644","url":"https:\/\/thejapanesefactory.com\/products\/seiko-prospex-alpinist-mechanical-gmt-hbc008j-hbc009j-made-in-japan-wristwatch","provider":"The Japanese Factory","version":"1.0","type":"link"}