Seiko Cal. 6678 - 636

This Solar model from 1976 features a 37mm Titanium case. With its 18mm lug width and 13.6mm profile, it sits comfortably on most wrists. [seikata-wm-bdb07fbf26fb]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Champagne

Jewels

35j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1976

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