Seiko Cal. 4487 - 280

The Seiko 4487-280 represents an important milestone in Seiko's 1976 lineup. Powered by the 4487 caliber with 21j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-561e27853a4f]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1976

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