Seiko Cal. 4511 - 613

This Spring Drive model from 1974 features a 35mm Titanium case. It features a Green dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-8f4e56123b20]

Also known as: Helmet, Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1974

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