Seiko Cal. 6635 - 204

The Seiko 6635-204 represents an important milestone in Seiko's 1984 lineup. It features a Black dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-4417a71845fc]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1984

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