Seiko Seigaiha: '青海波' Two-Tone Brushed Black

A distinctive black and gold custom build combining the traditional Japanese Seigaiha wave pattern with the sporty character of a Yachtmaster-inspired design.

At the heart of the build is a custom Seigaiha dial with black lume, paired with polished gold Mercedes-style hands featuring matching black lume. The combination of gold accents against the predominantly black construction creates a bold contrast while allowing the intricate wave pattern of the dial to remain the focal point.

A black Yachtmaster ceramic bezel insert surrounds the flat sapphire crystal, complementing the brushed and polished black case. Powering the watch is the reliable Seiko NH35A automatic movement, featuring a white date wheel with black numerals.

The build is finished with a black curved-end rubber strap and gold deployant clasp, tying together the black and gold aesthetic throughout the watch.

Watch Specifications

Case: Brushed/Polished Black Case
Dial: Custom Seigaiha Dial – Black Lume
Crown: Polished Black Screw-Down Crown
Date Wheel: White Date Wheel with Black Numerals
Caseback: Brushed/Polished Black Exhibition Caseback
Bezel Insert: Black Yachtmaster Ceramic Bezel Insert
Crystal: Flat Sapphire Crystal – No AR
Movement: Seiko NH35A (TMI) Automatic Movement
Hands: Polished Gold Mercedes Handset – Black Lume
Bracelet / Strap: Black Curved-End Rubber Strap with Gold Deployant Clasp
Water Resistance: 10 BAR / 100 metres

Dimensions

Case Diameter: 40mm
Lug-to-Lug: 48.4mm
Thickness: 13.25mm
Lug Width: 20mm