Seiko Cal. 6638 - 396

This Quartz model from 1991 features a 46mm PVD Black case. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-3836c1f9b5e9]

Also known as: Sumo, Arnie

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Burgundy

Jewels

24j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1991

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