Seiko Cal. 5683 - 537

This Spring Drive model from 1978 features a 41mm PVD Black case. It features a Green dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-48e21ff64a34]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1978

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