Seiko Cal. 4487 - 317

The 4487-317 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-8c86bc5546ea]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

32j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1978

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