Seiko Cal. 6638 - 186

The Seiko 6638-186 represents an important milestone in Seiko's 1989 lineup. The Fixed bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-ccf357242e67]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1989

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