SEIKO PROSPEX HBB003K1 2026 ASIA-PACIFIC LIMITED EDITION MEN WATCH

Seiko HBB003K1 — Prospex Sea 2026 Asia-Pacific Limited Edition Diver

The Seiko HBB003K1 is a 2026 Asia-Pacific Limited Edition diver's watch from Seiko's Prospex Sea collection — limited to 2,500 pieces, each with a serial number engraved on the screw case back alongside the "LIMITED EDITION" marking. Powered by the 4R35 automatic calibre with 23 jewels, a 41-hour power reserve, manual winding, and a stop-second hand for precise time-setting, it is housed in a 41.7 mm stainless steel case at 12.3 mm thick with a unidirectional rotating bezel, a screw-down crown, and 200m diver's water resistance. LumiBrite is applied to the hands, hour indexes, and the bezel — ensuring full legibility underwater and in low-light conditions.

Key Features

• Seiko 4R35 automatic calibre — 23 jewels, approx. 41-hour power reserve, manual winding, stop second hand for precise setting
• Date display — practical daily utility at the dial
• 41.7 mm stainless steel case — 12.3 mm thick, 49.5 mm lug-to-lug, 170 g
• Hardlex crystal — Seiko's proprietary hardened mineral glass for impact and scratch resistance
• Unidirectional rotating bezel — one-way rotation for safe elapsed-time tracking during dives
• Screw-down crown — seals the case for water resistance under pressure
• Screw case back — with "LIMITED EDITION" marking and individual serial number
• LumiBrite on hands, indexes, and bezel — triple-coverage luminescence for maximum underwater and low-light legibility
• 200 m (660 ft) diver's water resistance — ISO-standard diver's rating for recreational and professional diving
• 4,800 A/m magnetic resistance — shielded against everyday magnetic fields
• Three-fold clasp with secure lock, push-button release, and diver's extender — wears securely over a wetsuit
• Limited to 2,500 pieces — Asia-Pacific exclusive for 2026

Why You'll Love It

The HBB003K1 is a genuine ISO-rated diver's watch with limited-edition exclusivity — not a dive-styled fashion watch, but a purpose-built diving instrument with screw-down crown, screw case back, unidirectional bezel, and 200 m water resistance. The triple-coverage LumiBrite on hands, indexes, and bezel ensures legibility even in deep or murky water where single-coverage lume falls short. At 41.7 mm and 12.3 mm thick, it wears more compactly than many 200 m divers, and the diver's extension on the clasp means it fits over a wetsuit without needing a separate strap. With only 2,500 pieces across Asia-Pacific, each individually serial-numbered, it carries genuine collectible value alongside its dive-tool functionality.

The Seiko Story

Since 1881, when Kintaro Hattori founded a clock and watch shop in Ginza, Tokyo, Seiko has been at the forefront of timekeeping innovation — from the world's first quartz wristwatch in 1969 to today's GPS Solar and Spring Drive technologies. Seiko's Prospex (Professional Specifications) line carries a legacy that stretches back to the first Seiko diver's watch in 1965, worn by the Japanese Antarctic Research Expedition. The HBB003K1 continues that heritage as a 2026 Asia-Pacific exclusive — 200 m diver's capability, serial-numbered limited-edition provenance, and the reliability of the proven 4R35 automatic movement.

Backed by Seiko's official warranty. Authentic Seiko Prospex, sold by authorised retailer City Chain Singapore. Limited to 2,500 pieces — Asia-Pacific 2026 exclusive.

Explore more Seiko Prospex, browse the full Seiko collection, or see all Men's watches at City Chain Singapore.

Extra $15 OFF with min. $200 spend
Use Code: FORYOU15

Extra $30 OFF with min. $400 spend
Use Code: FORYOU30

Caliber Number: 4R35
Movement Type: Automatic with manual winding
Power reserve: Approx. 41 hours
Jewels: 23
Stop second hand function
Date display
Case Material: Stainless steel
Case Thickness: 12.3mm
Case Diameter: 41.7mm
Lug-to-lug: 49.5mm
Crystal: Hardlex
LumiBrite on hands, index(es) and bezel
Three-fold clasp with secure lock , push button release with extender
Distance between lugs: 20mm
Water Resistance: 200m / 660ft diver's
Magnetic Resistance: 4,800 A/m
Weight: 170.0g
LIMITED EDITION on the case back
Serial number engraved on the case back
Unidirectional rotating bezel
Screw-down crown
Screw case back

Delivery within Singapore | Order by 11AM
(Checkout options may vary depending on minimum order requirements)

• Free Standard Delivery (3 business days)
• Free Next Day Delivery
• Express Delivery at $30 (order by 2PM)
• Click & Collect (ready in 2–3 business days)

Weekend & Public Holiday Orders
Orders placed during this time will be processed on the next business day.

For online purchase, you can have bracelet or leather strap adjustments done at any City Chain store. Please bring along your warranty book for the service.