The Seiko Selection HFB002J (released within the acclaimed Japanese domestic Seiko Selection S Series Mechanical Collection) is a refined, high-performance Japanese automatic mechanical open-heart dress-sports timepiece. Standing as the sophisticated next-generation successor to the beloved SCVE051, this modern reference encapsulates the core ethos of the Seiko Selection lineup: an uncompromising commitment to functional versatility, timeless Japanese design aesthetics, and accessible mechanical craftsmanship. Across horology collector forums, everyday carry communities, and Japanese watch circles, it has earned defining community nicknames—the "Open Heart", "Blue Open Heart", "S Series Open Heart", "Semi-Skeleton", "Mechanical S Series", or "Ocean Blue Open Heart"—for its deep sunburst blue dial, open balance-wheel aperture, faceted three-dimensional indices, and balanced 40.0mm case architecture. It unites a sculpted 316L solid stainless steel case in an ergonomic 40.0mm diameter with a radiant radial deep blue dial face, three-sided diamond-cut hour batons, an open-heart mechanical window revealing the escapement, an in-house Japanese automatic mechanical movement, durable Hardlex crystal glass, certified 100-meter water resistance, and an integrated solid stainless steel construction with an easy-adjust sizing system. Perfectly calibrated for gentlemen seeking an eye-catching, high-grade mechanical daily wearer that transitions effortlessly from executive boardroom meetings and formal occasions to relaxed weekend gatherings. The defining visual centerpiece of this HFB002J reference is its multi-layered, sunburst blue dial face. Finished with an ultra-fine radial brushing technique, the deep blue surface dynamically plays with ambient light, shifting between vibrant royal blue in direct lighting and deep oceanic navy in dim conditions. Positioned prominently at 9 o'clock is a signature open-heart circular aperture framed by a polished silver-tone border, offering an unobstructed view into the oscillating balance wheel and escapement mechanism to reveal the living mechanical rhythm of the watch. Circling the perimeter are three-dimensional, three-sided faceted applied baton hour markers with wide, rainbow-ground chamfered facets that reflect light with brilliance. Faceted silver-tone sword-style hour and minute hands sweep over the face alongside a fine central seconds hand for instantaneous legibility. The outer minute track is cleanly calibrated with delicate demarcations, ensuring an uncluttered, balanced display. Framing the dial is a fixed, mirror-polished solid stainless steel bezel that flows seamlessly into the case architecture. Beneath its tailored exterior, the watch is driven by Seiko’s proven in-house Calibre 4R38 Japanese automatic mechanical movement, engineered and manufactured at Seiko’s dedicated horological facilities in Japan. Operating at a steady frequency of 21,600 vibrations per hour (3 Hz), this 24-jewel self-winding caliber harnesses the kinetic energy of the wearer’s wrist to wind the mainspring, delivering approximately 41 hours of autonomous power reserve on a full wind. Designed purposefully without a calendar mechanism to preserve dial symmetry and the purity of the open-heart layout, the caliber features both automatic self-winding and manual hand-winding capabilities, along with a hacking seconds (stop-seconds) mechanism that halts the seconds hand when the crown is pulled out for down-to-the-second time synchronization. Built with Seiko’s proprietary Diashock shock-absorbing architecture, the movement delivers dependable stability rated to a factory precision tolerance of +45 to -35 seconds per day and incorporates JIS Class 1 magnetic resistance (4,800 A/m), protecting timekeeping accuracy against daily electromagnetic exposure from smartphones and laptops.  The case is engineered with versatile, contemporary dress-sports proportions, measuring an official 40.0mm in case diameter with a case profile thickness of 11.8mm, a compact 46.2mm lug-to-lug distance, and a standard 20mm lug width, delivering an ergonomic, flush drape across wrists of all sizes. The solid 316L stainless steel case architecture combines vertical hairline satin brushing across the upper lugs with mirror-polished case flanks and bevels to create a sharp, dimensional profile. Dial protection is provided by a high-grade flat Hardlex crystal engineered to withstand everyday impacts and surface scratches. Built for dependable everyday resilience, the watch features an ergonomic fluted pull-out crown at 3 o'clock and an exhibition see-through screw-down caseback that allows the wearer to view the mechanical balance and oscillating rotor, while securing an impressive 10-bar (100 meters / 330 ft) water resistance rating, making it fully resilient against rain, accidental splashes, and swimming. The timepiece comes completed on an integrated solid stainless steel multi-link construction featuring satin-brushed outer rows and polished center link accents, secured by a sturdy one-push three-fold deployment clasp with an easy-adjustment sizing system.

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• UAE Orders: Delivered within 1 business day
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• 14-Day Return & Refund Policy from the date of delivery – see our Refund Policy for full details