{"product_id":"seiko-prospex-speedtimer-hbc003j-ice-blue-dial-calibre-6r55-automatic-countdown-timer-men-s-watch","title":"SEIKO Prospex Speedtimer HBC003J Ice Blue Dial Calibre 6R55 Automatic Countdown Timer Men’s Watch","description":"\u003ch2 style=\"margin:0 0 16px; font-size:24px; line-height:1.4; color:#222;\"\u003e\n  SEIKO Prospex Speedtimer HBC003J\n\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 16px; line-height:1.8; color:#333;\"\u003e\n  The SEIKO Prospex Speedtimer HBC003J is a mechanical sports watch inspired by the functional styling and distinctive colours of classic motor cars. Its ice-blue dial is paired with a black inner rotating ring and orange accents, creating a highly legible, instrument-inspired appearance.\n\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 16px; line-height:1.8; color:#333;\"\u003e\n  Although it belongs to the historic Speedtimer series, the HBC003J is not a chronograph. Instead, it features a countdown scale on an internal rotating ring. The ring is operated by the crown at the 4 o’clock position and can be used to monitor remaining time during motorsport activities or everyday tasks.\n\u003c\/p\u003e\n\n\u003ch3 style=\"margin:24px 0 12px; font-size:20px; line-height:1.4; color:#222;\"\u003e\n  Ice-Blue Dial with Motorsport-Inspired Accents\n\u003c\/h3\u003e\n\n\u003cp style=\"margin:0 0 16px; line-height:1.8; color:#333;\"\u003e\n  The pale ice-blue dial is complemented by a contrasting black countdown ring and orange details. The orange seconds hand coordinates with the markings on the rotating ring, improving visibility when timing short intervals. Applied hour markers and broad hands give the dial a bold and practical appearance.\n\u003c\/p\u003e\n\n\u003ch3 style=\"margin:24px 0 12px; font-size:20px; line-height:1.4; color:#222;\"\u003e\n  Internal Countdown Ring\n\u003c\/h3\u003e\n\n\u003cp style=\"margin:0 0 16px; line-height:1.8; color:#333;\"\u003e\n  A separate crown positioned at 4 o’clock rotates the internal countdown ring. This function allows the wearer to set a remaining-time reference for activities such as race starts, service intervals and other timed events without using a conventional chronograph mechanism.\n\u003c\/p\u003e\n\n\u003ch3 style=\"margin:24px 0 12px; font-size:20px; line-height:1.4; color:#222;\"\u003e\n  Calibre 6R55 Automatic Movement\n\u003c\/h3\u003e\n\n\u003cp style=\"margin:0 0 16px; line-height:1.8; color:#333;\"\u003e\n  The watch is powered by SEIKO’s Calibre 6R55 mechanical movement. It supports both automatic and manual winding and provides approximately 72 hours of power reserve when fully wound. The movement operates at 21,600 vibrations per hour, uses 24 jewels and includes a stop-seconds function for precise time setting.\n\u003c\/p\u003e\n\n\u003ch3 style=\"margin:24px 0 12px; font-size:20px; line-height:1.4; color:#222;\"\u003e\n  Compact Stainless-Steel Sports Case\n\u003c\/h3\u003e\n\n\u003cp style=\"margin:0 0 16px; line-height:1.8; color:#333;\"\u003e\n  The stainless-steel case measures 39.5mm across, 44.5mm from lug to lug and 12.0mm thick. SEIKO’s DiaShield surface treatment improves resistance to everyday scratches. A curved sapphire crystal with an anti-reflective coating on its inner surface provides durability and clear dial visibility.\n\u003c\/p\u003e\n\n\u003ch3 style=\"margin:24px 0 12px; font-size:20px; line-height:1.4; color:#222;\"\u003e\n  Multi-Row Stainless-Steel Bracelet\n\u003c\/h3\u003e\n\n\u003cp style=\"margin:0 0 16px; line-height:1.8; color:#333;\"\u003e\n  A finely articulated multi-row stainless-steel bracelet is designed to follow the shape of the wrist for a secure and comfortable fit. It uses a push-button three-fold clasp and a C-ring adjustment system.\n\u003c\/p\u003e\n\n\u003ch3 style=\"margin:24px 0 12px; font-size:20px; line-height:1.4; color:#222;\"\u003e\n  Key Features\n\u003c\/h3\u003e\n\n\u003cul style=\"margin:0 0 24px; padding-left:22px; line-height:1.8; color:#333;\"\u003e\n  \u003cli\u003eSEIKO Prospex Speedtimer mechanical model\u003c\/li\u003e\n  \u003cli\u003eIce-blue dial with black and orange accents\u003c\/li\u003e\n  \u003cli\u003eInternal rotating ring with countdown scale\u003c\/li\u003e\n  \u003cli\u003eCountdown ring operated by the crown at 4 o’clock\u003c\/li\u003e\n  \u003cli\u003eAutomatic Calibre 6R55 with manual winding\u003c\/li\u003e\n  \u003cli\u003eApproximately 72-hour power reserve\u003c\/li\u003e\n  \u003cli\u003e21,600 vibrations per hour and 24 jewels\u003c\/li\u003e\n  \u003cli\u003eStop-seconds function\u003c\/li\u003e\n  \u003cli\u003eStainless-steel case and multi-row bracelet\u003c\/li\u003e\n  \u003cli\u003eDiaShield surface coating\u003c\/li\u003e\n  \u003cli\u003eCurved sapphire crystal with inner anti-reflective coating\u003c\/li\u003e\n  \u003cli\u003eLumiBrite on the hands and hour markers\u003c\/li\u003e\n  \u003cli\u003e20-bar water resistance\u003c\/li\u003e\n  \u003cli\u003eMagnetic resistance of 4,800 A\/m\u003c\/li\u003e\n  \u003cli\u003eSEIKO Global Brand Core Shop model in Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin:24px 0 12px; font-size:20px; line-height:1.4; color:#222;\"\u003e\n  Specifications\n\u003c\/h3\u003e\n\n\u003ctable style=\"width:100%; border-collapse:collapse; border-spacing:0; table-layout:fixed;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"width:38%; padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eBrand\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eSEIKO\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eCollection\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eProspex\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eSeries\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eSpeedtimer\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eModel Number\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eHBC003J\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eInternational Reference\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eHBC003J1\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eJAN Code\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e4954628473189\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eRelease Date\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e5 September 2026\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eJapanese Distribution\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eSEIKO Global Brand Core Shop model\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eTarget\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eMen\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eDisplay\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eAnalogue\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eWatch Type\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eMechanical three-hand watch with countdown inner ring\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eMovement\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eAutomatic with manual winding\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eCalibre\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e6R55\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eAccuracy\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e+25 to −15 seconds per day\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003ePower Reserve\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eApproximately 72 hours when fully wound\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eFrequency\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e21,600 vibrations per hour \/ 3Hz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eJewels\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e24\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eMovement Functions\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eStop-seconds function\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eTiming Function\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eInternal rotating ring with countdown scale\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eChronograph\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eNo\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eDial Colour\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eIce blue with black and orange accents\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eCase Material\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eStainless steel\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eCase Coating\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eDiaShield \/ super-hard coating\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eCase Dimensions\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e44.5 × 39.5 × 12.0mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eCase Diameter\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e39.5mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eLug-to-Lug\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e44.5mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eCase Thickness\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e12.0mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eWeight\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e154g\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eCrystal\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eCurved sapphire crystal\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eCrystal Coating\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eAnti-reflective coating on the inner surface\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eLuminous Material\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eLumiBrite on hands and hour markers\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eWater Resistance\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e20 bar \/ 200 metres\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eMagnetic Resistance\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e4,800 A\/m\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eCase Back\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eScrew case back; orientation may vary between individual watches\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eBracelet Material\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eStainless steel with DiaShield coating\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eClasp\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eThree-fold clasp with push-button release\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eDistance Between Lugs\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e20mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eMaximum Wrist Size\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e205mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eBracelet Adjustment\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eC-ring system\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eCountry of Origin\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eJapan\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eWarranty in Japan\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003e3-year manufacturer warranty\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003cth scope=\"row\" style=\"padding:10px; border:1px solid #ccc; background:#f5f5f5; text-align:left; vertical-align:top;\"\u003eLimited Edition\u003c\/th\u003e\n      \u003ctd style=\"padding:10px; border:1px solid #ccc; vertical-align:top;\"\u003eNo limited-production quantity announced\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n","brand":"SEIKO","offers":[{"title":"Default Title","offer_id":49200562536703,"sku":"HBC003J","price":178200.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0720\/0561\/5871\/files\/hbc003j_1.jpg?v=1789297462","url":"https:\/\/japanheartfulstore.com\/products\/seiko-prospex-speedtimer-hbc003j-ice-blue-dial-calibre-6r55-automatic-countdown-timer-men-s-watch","provider":"Japan Heartful Store","version":"1.0","type":"link"}