Seiko Cal. 4487 - 317

The 4487-317 is a sought-after Solar piece from Seiko's golden era. Powered by the 4487 caliber with 36j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-ba8953004cd0]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1981

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