Seiko Cal. 6331 - 400

This Spring Drive model from 1967 features a 36mm Two-Tone case. Powered by the 6331 caliber with 28j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-eac34f190722]

Also known as: Shogun, Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Champagne

Jewels

28j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1967

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