SEIKO 5 SPORTS HDB004

SEIKO 5 Sports HDB004 Automatic Watch – 42.5mm SKX Series

The SEIKO HDB004 is a men’s automatic watch from the Seiko 5 Sports SKX series, featuring a 42.5mm stainless steel case and Seiko’s Caliber 4R36 automatic movement with manual winding capability.

With an approx. 41-hour power reserve, day/date display, LumiBrite hands and indexes, and 10 bar water resistance, the HDB004 combines practical everyday functionality with the distinctive design language of the Seiko 5 Sports collection.

Design Overview

The SEIKO 5 Sports HDB004 features a 42.5mm stainless steel case measuring 14.2mm thick and 46.0mm lug-to-lug. A unidirectional rotating bezel, curved Hardlex crystal, and see-through screw case back complete its sporty SKX-series construction.

Key Features

• SEIKO 5 Sports HDB004 men’s automatic watch
• SKX series
• October 2026 release
• 42.5mm stainless steel case
• 14.2mm case thickness
• 46.0mm lug-to-lug
• Automatic movement with manual winding – Caliber 4R36
• Approx. 41-hour power reserve
• 24 jewels
• Stop second hand function
• Day/date display
• Curved Hardlex crystal
• LumiBrite on hands and indexes
• Unidirectional rotating bezel
• 10 bar water resistance
• Magnetic resistance: 4,800 A/m
• 22mm distance between lugs
• Three-fold clasp with push button release
• Three-fold clasp with secure lock
• See-through & screw case back
• Weight: 169.0 g

Case & Exterior

• Case Material: Stainless steel
• Crystal: Curved Hardlex
• LumiBrite: LumiBrite on hands and indexes
• Bezel: Unidirectional rotating bezel
• Clasp: Three-fold clasp with push button release
• Secure Lock: Three-fold clasp with secure lock
• Distance Between Lugs: 22 mm
• Water Resistance: 10 bar
• Magnetic Resistance: 4,800 A/m
• Case Back: See-through & screw case back

Case Dimensions

• Diameter: 42.5 mm
• Thickness: 14.2 mm
• Lug-to-Lug: 46.0 mm
• Distance Between Lugs: 22 mm
• Weight: 169.0 g

Movement & Performance

• Movement Type: Automatic with manual winding
• Caliber: 4R36
• Power Reserve: Approx. 41 hours
• Jewels: 24
• Stop Second Hand Function: Yes
• Day/Date Display: Yes

Summary

The SEIKO 5 Sports HDB004 is a 42.5mm automatic watch from the SKX series, powered by Seiko’s Caliber 4R36 automatic movement with manual winding. It offers an approx. 41-hour power reserve, 24 jewels, and a practical day/date display.

With its stainless steel case, curved Hardlex crystal, unidirectional rotating bezel, LumiBrite hands and indexes, and 10 bar water resistance, the HDB004 delivers the functional character expected from the Seiko 5 Sports SKX series.

For more details, visit the official Seiko website.

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Unfortunately, we DO NOT ship internationally.