Seiko Cal. 6390 - 596

This Spring Drive model from 1976 features a 41mm Two-Tone case. Powered by the 6390 caliber with 29j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-10b439744d80]

Also known as: Monster, Rally

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Cream

Jewels

29j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1976

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