Seiko Cal. 6640 - 174

This Solar model from 1966 features a 42mm Two-Tone case. It features a Green dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-3cb554a4be18]

Also known as: Shogun

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1966

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