Seiko Cal. 6636 - 391

The Seiko 6636-391 represents an important milestone in Seiko's 1996 lineup. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-bf035dbaf1a9]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1996

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