SEIKO PROSPEX
SEIKO WATCH AUTOMATIC PROSPEX 2026 ASIA-PACIFIC LIMITED EDITION JDM 41.7MM HBB003K1
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.
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.