Seiko Cal. 6634 - 247

The Seiko 6634-247 represents an important milestone in Seiko's 1966 lineup. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-93f4f4c6a71e]

Also known as: Bullhead, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1966

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