Seiko Cal. 6637 - 974

The 6637-974 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6637 caliber with 27j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-fc30af2b35df]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1996

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