Seiko Cal. 4487 - 904

The Seiko 4487-904 represents an important milestone in Seiko's 1966 lineup. It features a Green dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-3d87e9b1d219]

Also known as: Bullhead, Flighty

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1966

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