Seiko Cal. 4487 - 928

The 4487-928 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4487 caliber with 20j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-2b630d760072]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1978

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