Seiko Cal. 6642 - 728

The Seiko 6642-728 represents an important milestone in Seiko's 1987 lineup. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-8a4260b571f8]

Also known as: Shogun

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Cream

Jewels

35j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1987

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