Seiko Cal. 6637 - 754

This Automatic model from 1977 features a 39mm Hardlex-Coated Steel case. Powered by the 6637 caliber with 18j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-a9921b211470]

Also known as: Shogun

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1977

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