Seiko Cal. 4587 - 639

This Spring Drive model from 1977 features a 38mm PVD Black case. With its 21mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-bb353cfbd91b]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1977

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