Seiko Cal. 6391 - 321

This Quartz model from 1972 features a 46mm Two-Tone case. Powered by the 6391 caliber with 32j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-145d1228313e]

Also known as: Monster, Sea Horse

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1972

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