{"product_id":"seiko-selection-hfb008j-jdm-open-heart-black-automatic-ladies-watch-japan-made","title":"SEIKO SELECTION HFB008J JDM Open Heart Black Automatic Ladies Watch Japan Made","description":"\u003cdiv class=\"text-base my-auto mx-auto [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"aba79353-58e2-4955-b961-0cb8ee5e1e7c\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003ch2 data-source-line=\"7-7\"\u003eDescription\u003c\/h2\u003e\n\u003cp data-source-line=\"9-9\"\u003eThe SEIKO SELECTION HFB008J is a ladies’ mechanical model from the S Series, created to bring the charm of Japanese automatic watchmaking into a clean and modern everyday design. Its black dial, simple three-hand layout, and open-heart display give the watch a more defined and contemporary look while still showcasing the movement’s mechanical character.\u003c\/p\u003e\n\u003cp data-source-line=\"11-11\"\u003ePowered by Caliber 4R38, the watch uses a mechanical automatic movement with manual winding, offering approximately 41 hours of power reserve, 24 jewels, and a stop-seconds function. With 10 bar water resistance, Hardlex crystal, and a stainless steel bracelet, it combines practical daily usability with the traditional appeal of a mechanical watch.\u003c\/p\u003e\n\u003cp data-source-line=\"13-13\"\u003eDesigned for women who want stronger visual contrast than a standard light-dial dress watch, the HFB008J delivers balanced comfort, clear styling, and dependable everyday wearability. Within the SEIKO SELECTION lineup, it stands out as a Japan-made open-heart model that blends understated elegance with accessible mechanical value.\u003c\/p\u003e\n\u003ch2 data-source-line=\"15-15\"\u003eKey Specifications\u003c\/h2\u003e\n\u003cul data-source-line=\"17-33\"\u003e\n\u003cli data-source-line=\"17-17\"\u003eCase: 39.6 × 33.7 × 10.8 mm, stainless steel case\u003c\/li\u003e\n\u003cli data-source-line=\"18-18\"\u003eBand: Stainless steel bracelet, one-push three-fold clasp\u003c\/li\u003e\n\u003cli data-source-line=\"19-19\"\u003eBand width: 16 mm\u003c\/li\u003e\n\u003cli data-source-line=\"20-20\"\u003eWater resistance: 10 bar\u003c\/li\u003e\n\u003cli data-source-line=\"21-21\"\u003eMovement: Caliber 4R38, mechanical automatic with manual winding\u003c\/li\u003e\n\u003cli data-source-line=\"22-22\"\u003ePower: Automatic, approximately 41 hours power reserve\u003c\/li\u003e\n\u003cli data-source-line=\"23-23\"\u003eAccuracy: +45 to -35 seconds per day\u003c\/li\u003e\n\u003cli data-source-line=\"24-24\"\u003eDisplay: Analog, black dial\u003c\/li\u003e\n\u003cli data-source-line=\"25-25\"\u003eFunctions: 3-hand display, open-heart display, stop-seconds function\u003c\/li\u003e\n\u003cli data-source-line=\"26-26\"\u003eSpecial features: 24 jewels, antimagnetic\u003c\/li\u003e\n\u003cli data-source-line=\"27-27\"\u003eGlass: Hardlex\u003c\/li\u003e\n\u003cli data-source-line=\"28-28\"\u003eOrigin: Japan Domestic Market (JDM)\u003c\/li\u003e\n\u003cli data-source-line=\"29-29\"\u003eMade in Japan: Confirmed\u003c\/li\u003e\n\u003cli data-source-line=\"30-30\"\u003eModel Code: HFB008J\u003c\/li\u003e\n\u003cli data-source-line=\"31-31\"\u003eJAN: 4954628473936\u003c\/li\u003e\n\u003cli data-source-line=\"32-33\"\u003eRelease date: June 5, 2026\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-source-line=\"34-34\"\u003eKey Highlights\u003c\/h2\u003e\n\u003cp data-source-line=\"36-36\"\u003eThe HFB008J stands out through its black open-heart dial, giving it a sharper and more contemporary presence than many standard ladies’ mechanical models. The darker dial tone adds contrast and definition, while the open-heart layout keeps the design visually engaging without becoming overly decorative.\u003c\/p\u003e\n\u003cp data-source-line=\"38-38\"\u003eIts 4R38 automatic movement gives the watch authentic mechanical identity with hand-winding capability and practical everyday usability. Rather than emphasizing quartz-style convenience, this model is better positioned as an approachable entry into genuine Japanese mechanical watchmaking.\u003c\/p\u003e\n\u003cp data-source-line=\"40-40\"\u003eOn the wrist, the balanced case proportions and stainless steel bracelet make it suitable for both casual and more polished styling. The black dial also improves overall contrast, helping the watch feel versatile, modern, and easy to coordinate with different wardrobes.\u003c\/p\u003e\n\u003cp data-source-line=\"42-42\"\u003eWithin the SEIKO SELECTION S Series, the HFB008J is a strong JDM option for buyers seeking a Japan-made ladies’ automatic watch with an open-heart display, darker dial styling, and solid entry-level mechanical appeal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SEIKO","offers":[{"title":"Default Title","offer_id":48640622133503,"sku":"HFB008J","price":42500.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0720\/0561\/5871\/files\/hfb008j_1.jpg?v=1780832064","url":"https:\/\/japanheartfulstore.com\/products\/seiko-selection-hfb008j-jdm-open-heart-black-automatic-ladies-watch-japan-made","provider":"Japan Heartful Store","version":"1.0","type":"link"}