Seiko Cal. 4487 - 974

The Seiko 4487-974 represents an important milestone in Seiko's 1965 lineup. With its 22mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-b597c6a2c140]

Also known as: Bullhead, Helmet

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1965

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