Seiko Cal. 6634 - 118

The Seiko 6634-118 represents an important milestone in Seiko's 1968 lineup. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-6c1bf5fcd7e8]

Also known as: Monster, Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1968

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