Seiko Cal. 6647 - 481

The Seiko 6647-481 represents an important milestone in Seiko's 1973 lineup. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-96e8ce10b15c]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

43mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1973

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