Seiko Cal. 3891 - 379

This Automatic model from 1980 features a 41mm Two-Tone case. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-04bfd13fd214]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1980

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