Seiko Cal. 5640 - 525

The Seiko 5640-525 represents an important milestone in Seiko's 1978 lineup. It features a Cream dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-a5a26da50cda]

Also known as: Shogun

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

190m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1978

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