Seiko Cal. 6643 - 709

The Seiko 6643-709 represents an important milestone in Seiko's 1991 lineup. It features a Green dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-242cf3d983a9]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1991

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