Seiko Cal. 6637 - 377

This Solar model from 1981 features a 43mm Two-Tone case. With its 21mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-25cee2a2b635]

Also known as: Shogun

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1981

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