Seiko Cal. 6638 - 329

The Seiko 6638-329 represents an important milestone in Seiko's 1987 lineup. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-2ef4cc361e4d]

Also known as: Panda

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1987

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