Seiko Cal. 6640 - 109

The Seiko 6640-109 represents an important milestone in Seiko's 1986 lineup. It features a Champagne dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-bf84fa2edd1a]

Also known as: Shogun, Silverwave

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Champagne

Jewels

34j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1986

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