Seiko Cal. 6637 - 207

The Seiko 6637-207 represents an important milestone in Seiko's 1977 lineup. Powered by the 6637 caliber with 21j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-32ffcc294387]

Also known as: Goldfeather

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1977

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