Seiko Cal. 6639 - 167

The Seiko 6639-167 represents an important milestone in Seiko's 1988 lineup. It features a Green dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-a78add30fdb8]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1988

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