Seiko Cal. 6331 - 240

This Spring Drive model from 1967 features a 46mm Gold-Plated case. With its 19mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-c6b6dcf73c8b]

Also known as: Rally, Navigator

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1967

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