Seiko Cal. 4587 - 135

This Spring Drive model from 1971 features a 42mm Titanium case. Powered by the 4587 caliber with 36j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-f5d30db873e4]

Also known as: Monster, Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

120m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1971

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