Seiko Cal. 6638 - 553

The Seiko 6638-553 represents an important milestone in Seiko's 1986 lineup. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-bf54989fda6e]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1986

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