Seiko Cal. 4587 - 131

This Hand-Winding model from 1966 features a 41mm Titanium case. With its 19mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-4ffea98da549]

Also known as: Sumo, Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Cream

Jewels

24j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1966

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