Seiko Cal. 6690 - 538

This Hand-Winding model from 1988 features a 41mm Gold-Plated case. With its 18mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-52205e535b02]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1988

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