Seiko Cal. 6631 - 634

This Solar model from 1981 features a 43mm PVD Black case. With its 18mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-b4fb92e47fde]

Also known as: Golden Tuna, Flighty

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

43mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1981

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