Seiko Cal. 6631 - 804

This Automatic model from 1989 features a 36mm Hardlex-Coated Steel case. The Fixed bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-84ea5b3bceef]

Also known as: Tuna, Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1989

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