Seiko Cal. 6617 - 638

The Seiko 6617-638 represents an important milestone in Seiko's 1971 lineup. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-8920be16a8f5]

Also known as: Sea Horse

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1971

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