Seiko Cal. 6638 - 151

This Spring Drive model from 1999 features a 34mm PVD Black case. With its 20mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-1282f74ea042]

Also known as: Tuna, UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

White

Jewels

26j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1999

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