Seiko Cal. 3831 - 633

This Solar model from 1983 features a 34mm PVD Black case. Powered by the 3831 caliber with 33j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-38b6534f111f]

Also known as: Monster

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Cream

Jewels

33j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1983

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