Seiko Cal. 6637 - 980

The Seiko 6637-980 represents an important milestone in Seiko's 1965 lineup. It features a Green dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-7cabef16df9d]

Also known as: Turtle

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

14.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1965

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