Seiko Cal. 5640 - 132

The Seiko 5640-132 represents an important milestone in Seiko's 1972 lineup. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-f8b27b1bf8ec]

Also known as: Monster, Silverwave

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1972

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