Seiko Cal. 6390 - 761

This Spring Drive model from 1990 features a 34mm Hardlex-Coated Steel case. Powered by the 6390 caliber with 33j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-2e84a88a5408]

Also known as: Samurai, Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

33j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1990

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