Seiko Cal. 6678 - 936

This Spring Drive model from 1967 features a 46mm Gold-Plated case. With its 21mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-5d02579b370b]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Silver

Jewels

32j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1967

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