Seiko Cal. 6638 - 457

The Seiko 6638-457 represents an important milestone in Seiko's 1985 lineup. With its 18mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-a5cb87bb7d28]

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1985

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