This Seiko DX (Ref. 6106-5400) captures the brand’s push toward bold, modernist design during the early 1970s. The distinctive cushion case with a polished bezel surrounds a deep black dial, highlighted by silver-tone baton indices and a framed day-date window at 3 o'clock. The DX line was known for reliability, and this model features the 6106 automatic movement—hacking and hand-winding excluded by design for simplicity.

The dial is framed by a sharply faceted crystal and fitted with a new black croc-grain leather strap with red contrast stitching, complementing the angularity of the case.

Key Features

• 6106 automatic movement with quickset day-date

• Deep black dial with baton indices and framed window

• Polished cushion case with brushed sides

• Seiko Sea Lion caseback engraving

• New black leather strap with red stitching

Specifications

• Movement: Seiko 6106 automatic, 25 jewels

• Reference: 6106-5400

• Case width: 37mm (excluding crown)

• Lug width: 18mm

• Case material: Stainless steel

• Crystal: Hardlex (original, faceted)

• Dial: Gloss black with applied indices and DX logo

• Functions: Hours, minutes, central seconds, day, date

• Strap: Black leather, red stitched, aftermarket (new)

• Water resistance: Marked waterproof (not tested)

• Origin: Japan

Note: This is a vintage mechanical watch in functional condition with visible case wear and light aging on the crystal. Ideal for collectors and daily vintage wear—avoid water exposure.