SEIKO PROSPEX
SEIKO WATCH AUTOMATIC PROSPEX 2026 ASIA-PACIFIC LIMITED EDITION JDM 41.7MM HBB004K1
The Seiko HBB004K1 is the second colourway in the 2026 Asia-Pacific Limited Edition diver's pair from Seiko's Prospex Sea collection — sharing the exact same 4R35 automatic calibre, the same 41.7 mm stainless steel case at 12.3 mm thick, the same Hardlex crystal, the same unidirectional rotating bezel, the same screw-down crown, the same screw case back with individual serial number and "LIMITED EDITION" marking, the same triple-coverage LumiBrite on hands, indexes, and bezel, 200m diver's water resistance as its sibling the HBB003K1. Limited to 2,500 pieces, each individually serial-numbered, the HBB004K1 offers the same professional dive-tool specification in a different colour expression.
DESCRIPTION: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
Frequently asked questions
Is this watch authentic and authorized?
Yes. Vincent Watch is an authorized Seiko retailer in Singapore, and this watch is sourced directly from Seiko.
What's included in the box?
Seiko's standard packaging, including box, papers, and manufacturer warranty card.
What's the warranty?
Covered under Seiko's 3-year international manufacturer warranty.
Vincent Watch — your most trusted watch authorised dealer in Singapore.