Seiko Cal. 6635 - 889

This Automatic model from 1991 features a 40mm Hardlex-Coated Steel case. It features a Black dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-ad5e3902af5f]

Also known as: Golden Tuna, Arnie

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1991

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