Seiko Cal. 6634 - 511

The Seiko 6634-511 represents an important milestone in Seiko's 1995 lineup. With its 20mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-86cd07385630]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1995

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