Seiko Cal. 6391 - 328

The Seiko 6391-328 represents an important milestone in Seiko's 1994 lineup. Powered by the 6391 caliber with 31j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-eca7d5d1afae]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

31j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1994

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