Seiko Cal. 6331 - 561

This Spring Drive model from 1988 features a 46mm PVD Black case. Powered by the 6331 caliber with 29j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-d93328d1d515]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1988

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