Seiko Cal. 4451 - 639

The Seiko 4451-639 represents an important milestone in Seiko's 1986 lineup. With its 18mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-149fc7505f23]

Also known as: Bullhead, UFO

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1986

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