Seiko Cal. 5640 - 903

This Hand-Winding model from 1979 features a 45mm Titanium case. It features a White dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-1ea506bf5926]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

32j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1979

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