Seiko Cal. 6390 - 157

This Spring Drive model from 1983 features a 34mm Two-Tone case. Powered by the 6390 caliber with 32j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-cde59ba66a14]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Burgundy

Jewels

32j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1983

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