Seiko Cal. 4487 - 921

The 4487-921 is a sought-after Quartz piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-09c0678e473f]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1995

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