Seiko Cal. 6637 - 512

This Spring Drive model from 1979 features a 43mm Stainless Steel case. It features a Cream dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-dc06ec9e8574]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Cream

Jewels

17j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1979

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