Seiko Cal. 6640 - 922

The Seiko 6640-922 represents an important milestone in Seiko's 1997 lineup. The Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-38aa875fab14]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

13.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1997

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