Seiko Cal. 6642 - 461

This Spring Drive model from 1991 features a 40mm Titanium case. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-b8f6b6436a9a]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1991

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