Seiko Cal. 6331 - 294

This Spring Drive model from 1973 features a 44mm Two-Tone case. It features a White dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-5376fe7df1a9]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1973

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