Seiko Cal. 6631 - 758

The Seiko 6631-758 represents an important milestone in Seiko's 1974 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-0df6d503e401]

Also known as: UFO, Emperor

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

160m

Dial Color

Champagne

Jewels

36j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1974

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