Seiko Cal. 6635 - 321

The Seiko 6635-321 represents an important milestone in Seiko's 1978 lineup. It features a Navy dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-f17af0aa1801]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1978

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