



Seiko Prospex Speedtimer Automatic Watch HBC004J1

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1970s neo-classic motoring romance meets advanced mechanical precision. The Seiko Prospex Speedtimer HBC004J1 captures the spirit of classic young-timer automotive culture. Housed in a compact 39.5 mm stainless steel case treated with a protective super hard coating, it features a rich petrol blue dial framed by a curved anti-reflective sapphire crystal. Drawing design inspiration from classic car interiors, it is paired with an LWG-certified sustainable leather (calfskin) strap textured with custom embossed patterns. Powered by Seiko's advanced in-house Caliber 6R55 automatic movement, it offers an extended 72-hour power reserve and robust 200 meters of water resistanc
1970s neo-classic motoring romance meets advanced mechanical precision. The Seiko Prospex Speedtimer HBC004J1 captures the spirit of classic young-timer automotive culture. Housed in a compact 39.5 mm stainless steel case treated with a protective super hard coating, it features a rich petrol blue dial framed by a curved anti-reflective sapphire crystal. Drawing design inspiration from classic car interiors, it is paired with an LWG-certified sustainable leather (calfskin) strap textured with custom embossed patterns. Powered by Seiko's advanced in-house Caliber 6R55 automatic movement, it offers an extended 72-hour power reserve and robust 200 meters of water resistanc
CASE
Case Diameter: 39.5 mm
Case Thickness: 12.0 mm
Case Length (Lug-to-Lug): 44.5 mm
Material: Stainless Steel (Super Hard Coating)
Crystal: Curved Sapphire Crystal with Anti-Reflective Coating
BAND
Material: Leather (Calfskin) Band (LWG-Certified)
Lug Width: 20.0 mm
Clasp: Three-Fold Clasp with Push-Button Release
MOVEMENT
Caliber Number / Movement: Caliber 6R55 (Automatic with Manual Winding)
Accuracy: Approximately +25 to -15 seconds per day
Power Reserve: Approximately 72 Hours
Water Resistance: 200 Meters / 20 Bar
Luminous: LumiBrite on hands and indexes
CASE
Case Diameter: 39.5 mm
Case Thickness: 12.0 mm
Case Length (Lug-to-Lug): 44.5 mm
Material: Stainless Steel (Super Hard Coating)
Crystal: Curved Sapphire Crystal with Anti-Reflective Coating
BAND
Material: Leather (Calfskin) Band (LWG-Certified)
Lug Width: 20.0 mm
Clasp: Three-Fold Clasp with Push-Button Release
MOVEMENT
Caliber Number / Movement: Caliber 6R55 (Automatic with Manual Winding)
Accuracy: Approximately +25 to -15 seconds per day
Power Reserve: Approximately 72 Hours
Water Resistance: 200 Meters / 20 Bar
Luminous: LumiBrite on hands and indexes
Notice to Customers:
Orders are dispatched from Singapore.
For customers in the United States:
As of August 29, 2025, all goods imported into the U.S.—regardless of their value—may incur a 10% import duty. This change follows the removal of the de minimis threshold under updated U.S. customs policies.
Please note that customers are responsible for all import duties, taxes, customs charges, and any applicable handling fees.
For information specific to your country’s customs process, including courier fees or tax-free limits, please reach out to our support team.
Notice to Customers:
Orders are dispatched from Singapore.
For customers in the United States:
As of August 29, 2025, all goods imported into the U.S.—regardless of their value—may incur a 10% import duty. This change follows the removal of the de minimis threshold under updated U.S. customs policies.
Please note that customers are responsible for all import duties, taxes, customs charges, and any applicable handling fees.
For information specific to your country’s customs process, including courier fees or tax-free limits, please reach out to our support team.
