Seiko Cal. 5660 - 590

This Hand-Winding model from 1980 features a 43mm Gold-Plated case. It features a Black dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-ea40848d25da]

Also known as: Helmet, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1980

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