Seiko Cal. 6635 - 412

The Seiko 6635-412 represents an important milestone in Seiko's 1987 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-28788c9c5c51]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1987

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