Seiko Prospex Yellow Dial Men 41.7mm HBB003K1

Capturing the radiant warmth of coastal sunrise and ISO-certified diving performance, the Seiko Prospex 2026 Asia-Pacific Limited Edition 41.7mm  represents an exclusive regional collector's release restricted to just 2,500 individually serialized timepieces. Sculpted in a geometric 41.70 mm surgical-grade 316L stainless steel case inspired by the angular "Samurai" diver silhouette, this professional sports watch showcases an energetic sand-textured yellow dial that reflects bright tropical dawn light. Framed by a contrasting black unidirectional rotating dive bezel, an impact-resistant Hardlex crystal, an unobtrusive date aperture at 4:30, and high-intensity LumiBrite luminescence across the hands, hour indices, and bezel pip, it is powered by the proven in-house Seiko Calibre 4R35 automatic movement. Completed with a solid stainless steel bracelet featuring an integrated wetsuit diver's extension and 200-metre water resistance, it delivers a vibrant statement piece for scuba diving and active daily wear.

Key Highlights

• 2026 Asia-Pacific Limited Edition: Exclusive regional collector's release strictly limited to 2,500 individually serialized pieces worldwide, engraved with "LIMITED EDITION" and an individual production serial number on the case back.

• Vivid Sand-Textured Tropical Yellow Dial: Tactile granular matte dial surface depicting warm coastal sands illuminated by morning sunlight, framed by sharp black-bordered luminous indices.

• In-House Seiko Calibre 4R35 Automatic Movement: Proven 23-jewel Japanese mechanical calibre beating at 21,600 vibrations per hour, offering a 41-hour power reserve, manual hand-winding, and second-hand hacking (stop-seconds).

• Iconic Angular "Samurai" Case Architecture: Sharp geometric 41.70 mm stainless steel case profile combining faceted surfaces with an ergonomic 49.50 mm lug-to-lug span.

• ISO-Certified 200-Metre Diver's Water Resistance: Professional 20 bar (200 m / 660 ft) water resistance secured by a knurled screw-down crown and solid screw-down case back.

• Triple LumiBrite Luminescence: High-intensity Seiko LumiBrite applied across the faceted hands, hour indices, and bezel elapsed-time scale for uncompromised visibility in dark ocean depths.

• Unidirectional Rotating Black Dive Bezel: Precise one-way rotating bezel with a 60-minute scale engineered to prevent accidental extension of calculated dive times.

• Diver's Clasp with Wet-Suit Extender: Three-fold stainless steel clasp featuring a dual push-button release, security flap, and fold-out diver's extension for wearing over wetsuits.

• Official Seiko 3-Year Manufacturer Warranty: Fully covered nationwide and internationally under Seiko’s official brand guarantee.

Design & Craftsmanship

"Asian Resorts" Sunrise Inspiration & Tactile Dial Texture

Conceived alongside its sunset-orange sibling, the HBB003K1 draws inspiration from tropical beachscapes during dawn. The dial surface features a distinct granular sand texture finished in saturated canary yellow. Bold trapezoidal and rectangular indices are bordered in crisp black and generously filled with LumiBrite, while the date window is placed between 4 and 5 o'clock to preserve dial symmetry.

Angular "Samurai" Geometry & Wrist Ergonomics

Sized at 41.70 mm in diameter and 12.30 mm in thickness, the case draws directly from Seiko’s famed "Samurai" diver silhouette. Sharp, sword-cut bevels on the lugs and faceted case flanks deliver an aggressive tool-watch presence that wears smaller than its dimensions suggest thanks to compact 49.50 mm lug-to-lug spacing. The high-contrast black anodized dive bezel provides immediate visual distinction against the vibrant yellow dial face.

In-House Calibre 4R35 & True Professional Dive Utility

Beneath the individually serialized screw-down case back beats the in-house Seiko Calibre 4R35 automatic movement, delivering 41 hours of power reserve along with manual hand-winding and second-hand hacking functionality. The 316L stainless steel bracelet features solid three-link construction, a milled folding clasp with dual push buttons, and a fold-out diver’s extension that expands the bracelet instantly to fit over the cuff of a wetsuit.