Seiko Cal. 6640 - 110

The Seiko 6640-110 represents an important milestone in Seiko's 1992 lineup. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-7c2b88c7eda3]

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1992

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