Seiko Cal. 6638 - 559

The Seiko 6638-559 represents an important milestone in Seiko's 1998 lineup. It features a White dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-88947d5443bb]

Also known as: Emperor

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1998

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