Seiko Cal. 6638 - 554

This Quartz model from 1998 features a 37mm PVD Black case. Powered by the 6638 caliber with 20j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-4bd3dffaec85]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1998

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