In celebration of Seiko’s 145th anniversary, Seiko Prospex introduces a limited-edition model with blue accents inspired by “Seiko Blue.”

In the second series of commemorative limited-edition watches celebrating Seiko’s 145th anniversary, a blue accent inspired by “Seiko Blue” is used. Established in the 1960s and refined over time, Seiko Blue continues to embody the Seiko brand identity.

Inspired by “Seiko Blue,” a signature color established in the 1960s and perfected over the decades, blue is adopted as an accent color for the bezel and seconds hand.
The combination of the two-tone bezel and a silver white dial creates a fresh and sophisticated impression on the wrist.

This model inherits a case design composed of straight, blade-like surfaces, while achieving a sharper and more compact form. With chamfering on the center links, the high-quality, solid bracelet delivers a refined finish that complements the case’s linear design.

HBB001

$595
June 2026 Release

SPECIFICATIONS

MOVEMENT

Caliber Number
4R35
Movement Type
Automatic with manual winding
Power reserve
Approx. 41 hours
Jewels
23
Functions
• Stop second hand function
• Date display

OTHER DETAILS

Water Resistance
200m / 660ft diver's
Magnetic Resistance
4,800 A/m
Weight
170.0g
Features
LIMITED EDITION on the case back
• Unidirectional rotating bezel
• Screw-down crown
• Screw case back

CASE/BAND

Case Material
Stainless steel
Case Size
Thickness 12.3mm
Diameter 41.7mm
Lug-to-lug 49.5mm
Crystal
Hardlex
LumiBrite
LumiBrite on hands, index(es) and bezel
Clasp
Three-fold clasp with secure lock , push button release with extender
Distance between lugs
20mm