Seiko Cal. 6331 - 595

The Seiko 6331-595 represents an important milestone in Seiko's 1974 lineup. Powered by the 6331 caliber with 32j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-288bae50866d]

Also known as: Monster, Sumo

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

30m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1974

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