Seiko Cal. 6641 - 318

This Hand-Winding model from 1973 features a 42mm PVD Black case. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-d36d8ff1816e]

Also known as: Monster, Emperor

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Silver

Jewels

27j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1973

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