Seiko Cal. 4487 - 948

The Seiko 4487-948 represents an important milestone in Seiko's 1980 lineup. Powered by the 4487 caliber with 21j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-20494304d544]

Also known as: Silverwave, Crown

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1980

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