Seiko Cal. 5640 - 396

This Quartz model from 1988 features a 45mm Titanium case. It features a Navy dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-dbcefdd38ee1]

Also known as: Tuna, Arnie

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

45mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1988

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