Seiko Cal. 4590 - 981

This Hand-Winding model from 1986 features a 35mm Titanium case. Powered by the 4590 caliber with 27j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-1ac1f12c64f6]

Also known as: Helmet, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1986

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