Seiko Cal. 6637 - 239

The Seiko 6637-239 represents an important milestone in Seiko's 1977 lineup. It features a Green dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-6248edb30f98]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1977

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