Seiko Cal. 6636 - 504

This Automatic model from 1975 features a 42mm Hardlex-Coated Steel case. It features a Champagne dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-b25e37af1585]

Also known as: Sumo, Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

14.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

130m

Dial Color

Champagne

Jewels

34j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1975

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