Seiko Cal. 6311 - 954

This Spring Drive model from 1966 features a 39mm Titanium case. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-d787bbb1afe5]

Also known as: Tuna, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1966

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