Seiko Cal. 6631 - 903

This Solar model from 1969 features a 45mm Hardlex-Coated Steel case. It features a Champagne dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-cc23bea6bb05]

Also known as: UFO, Emperor

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Champagne

Jewels

33j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1969

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