Seiko Cal. 6637 - 976

The Seiko 6637-976 represents an important milestone in Seiko's 1979 lineup. It features a Black dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-bafd9937c0d8]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1979

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