Seiko Cal. 6640 - 371

This Quartz model from 1974 features a 37mm Stainless Steel case. It features a Green dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-795de1e071f8]

Also known as: Navigator

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1974

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